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An oil change on a TRX 420 Honda ATV is standard maintenance, and an important way to keep your ATV's engine healthy. Honda recommends every 12 months, 100 hours, or 600 miles: whichever comes first.
Watch the video above and follow the steps below to learn how to do an oil change on a Honda TRX 420.
Step 1. Run the engine for a couple of minutes to circulate the oil.
PRO TIP: You don't need to bring the engine all the way up to temperature, but circulating the oil a little will make it easier to drain.
Step 2. Remove the plastic panels on both sides of the unit. You can pull them out by hand without any tools.
PRO TIP: Removing the right side panel allows you to access the oil filter, and on the left hand side you'll find the oil fill cap.
Step 3. Find the drain bolt underneath the unit to remove the used oil, and get a drain pan to catch the oil. See #7 in the Rancher crankcase diagram to find the bolt's location. Access the drain bolt through the hole in the skid plate, and use your 17mm socket to remove it.
NOTE: Be careful not to lose the crush washer on the bolt. If you need to replace it, Honda has a drain bolt crush washer available for purchase.
Step 4. Remove the old oil filter while the used oil drains. The filter is found on the right side of the engine and can be seen as #4 in our Rancher front crankcase cover diagram. Some oil will leak out, so get a rag underneath it to avoid a mess. Take off the three 8mm bolts to remove the cover and expose the filter, then pull the filter out.
NOTE: There's a spring behind the filter that should remain in place.
Step 5. Replace the oil filter. One side of the filter will have "Outside" stamped in the metal. It's crucial that this side faces out toward you when you install the filter. Make sure the spring is behind the filter and then slide it in place.
Step 6.
Inspect the O-rings on the oil filter cover and around one of the bolt holes for the cover. Make sure they are not cut or damaged. Then, replace the filter cover and the three 8mm bolts without over-tightening them.
Step 7. Replace the right-hand side plastic. There's a tab at the bottom of the plastic piece. Hook it into place first, then push the rest of the plastic into place and snap it.
Step 8. Replace the drain plug. Hand-tighten it first to get it threaded, then use a torque wrench to tighten it to 18 foot-pounds.
Step 9. Refill the engine with oil.
PRO TIP: Honda says the oil capacity of the Rancher 420 is 3 quarts, but we found that can be a little too much. Pour in 2.5 quarts, replace the fill cap, run the engine for a couple of minutes, and then check the level. To check the oil level on the engine, don't screw in the fill cap. Just plunge it in and remove it, then top the engine off with oil to set the level.
Step 10. Replace the fill cap.
Step 11. Replace the plastic cover and you're done.
Now that you've got the engine oil change done on your Honda TRX 420, why not go ahead and change rear differential oil while you're at it? Watch the video below to see how to change the drive shaft oil on a Honda Rancher 420.
Watch our full Honda Rancher TRX420 repair videos playlist below.
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An oil change is a simple maintenance job that’s essential to the health of the engine in your Honda ATV. Performing regular oil changes will keep your machine running great for years to come.
Watch the video above and follow the steps below to do an oil change on a Honda TRX350.
Tools and Supplies – Honda Rancher TRX 350 Oil ChangeHonda Rancher 350 Oil ChangeStep 1.
Run the engine for a few minutes to heat up the oil, which makes it drain out faster.
Step 2. Loosen up the dipstick so that air can get into the engine, which also helps the oil drain out easier.
Step 3. Get a drain pan under your machine, then find the 17mm drain bolt on the centerline of the engine, toward the gearshift. Remove the bolt, and drain the oil into the pan.
Step 4. Inspect the crush washer on the drain bolt while the oil drains. Replace the crush washer if it’s worn or damaged.
Step 5. Replace the drain bolt once the engine oil has drained completely.
NOTE: Don’t overtighten the drain bolt, just get it snug. Overtightening it will make it very hard to remove next time.
Step 6. Remove the three 8mm bolts holding the oil filter cover in place, followed by the oil filter cover itself.
The oil filter cover is next to the dipstick.
PRO TIP: Get a drain pan underneath before you open the oil filter cover, since you’ll probably get some oil leaking out as you loosen the bolts.
Step 7. Remove the old oil filter, then install the new oil filter.
NOTE: Make sure the spring behind the filter stays in place in the filter cover and doesn’t pop out with the old filter. Honda labels which side of the oil filter faces out, so you’ll know which way to install the new filter.
Step 8. Replace the oil filter cover, then hand-tighten the 8mm bolts before using your socket and ratchet to tighten each bolt evenly across to avoid leaks.
NOTE: Because of the spring behind the oil filter, you may need to apply some pressure to the cover to thread the 8mm bolts.
Step 9. Fill up the engine with Honda 10W-30 motor oil through the fill opening on the left side of the engine, opposite the dipstick opening on the right.
NOTE: The Honda Rancher 350 takes a little over 2 quarts of oil, so start off by pouring in just 2 quarts.
Step 10. Run the engine for a few minutes, then check the dipstick to see exactly where the oil level is. Top off the oil if necessary to get the oil level correct.
Step 11. Close the filler opening, tighten the dipstick and you’re done.
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Have you seen the movie Colors?
Of course, it's not about different colors of engine oil and what they mean. But luckily, if you're looking for the answer to why the oil in your pitbike/ATV is milky or white, you've come to the right place.
If you're looking for a movie in which an experienced cop and his rookie partner patrol the streets of East Los Angeles and try to keep local gangs under control, you've come to the wrong place.
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For many reasons, oil can be called the blood of all petrol and diesel vehicles. Pit bikes and ATVs are also no exception. If you cut yourself and the blood coming out of the wound is any color but not red, you will be frightened and call a doctor. Human blood should be red; likewise, the oil should be amber or dark brown in color. If it has a different color - depending on the color - change it or call a mechanic (you can also handle it yourself). nine0003
We hope you check your oil regularly. Timely replacement of engine oil and monitoring its level is a guarantee that the engine will work stably and efficiently. So the next time you check your oil and it's different from its normal amber color, you know you're in trouble.
If the oil is black, it is doing its job well. The oil absorbs contaminants, preventing engine damage and premature wear. The black tint of the oil indicates that it contains impurities, has lost its viscosity and needs to be replaced.
Be aware that on some bikes, even after one ride, the oil turns from dark brown to black. It is important to know your bike well in order to avoid frequent oil changes and reduce operating costs. nine0003
But if the oil has exceeded the hours recommended by the manufacturer and is black as night at the same time, change the oil and oil filter.
Milky butter is a cause for concern. Milky butter is somewhat similar to coffee with cream. Sometimes it's even frothy, like a milkshake. A milky shade of oil indicates the ingress of coolant into the lubrication system or the accumulation of condensate. Most likely, the problem arose due to antifreeze; and since antifreeze, like oil, is based on hydrocarbons, they mix well. nine0003
Coolant and engine oil are chemically stable. For example, a damaged cylinder head allows coolant to leak from the cooling jacket into the combustion chamber. Also, a crack in the "water jacket" can cause antifreeze to enter the engine.
In addition, a failed water pump makes it possible for the two fluids to mix.
If it's not the antifreeze and you've also checked the radiator and other possible leaks, then someone deliberately wants to ruin your trip and pours water right into the engine. Perhaps not, it also happens that moisture has accumulated in an ATV or motorcycle due to violation of conditions during long-term storage. Condensation collects at the bottom and oil stays at the top, and when you start your bike, the mixture of water and oil gives off a milky finish. nine0003
In some cases, the oil is milky in consistency and resembles lard in aspic, which means that either you found your own barn, or completely ignored the necessary maintenance of your equipment and abandoned it for a very long time, or never changed the oil for 80,000 kilometers.
If the oil has a silver tint, that is, it looks like the liquid metal body of the T-1000 robot from the second Terminator, then you are in really big trouble and they are not related to the fact that the oil is magically extracted from the engine and transforms into a metal dagger.
If you see the golden color of the oil, you also, unfortunately, have not found a gold mine. nine0003
When starting a new motorcycle or ATV, it is best to change the oil and filter after the first test ride, as it contains small metal chips. Even in good engines, metal chips are present in small amounts, and this is one of the reasons why you should change both the oil and the filter regularly. Also, copper or bronze thrust bearings can add a golden color to the oil and lubrication components - this is why golden fibers can be seen in engine oil. This is not a cause for concern. nine0003
But still, if heavy metal gets into the oil, and it's not guitar riffs from your radio, the result will be failure of the thrust or connecting rod bearings due to increased friction in the crankcase.
Now you know why regular oil checks are so important. It not only allows you to identify serious malfunctions, but also makes it possible to diagnose the condition of an ATV or a pit bike in a timely manner so that their maintenance does not cost you a pretty penny.
There are many nuances in the selection of equipment and related materials, but the best choice would be to consult a specialist. You can call us +7 (383) 255-55-40 (Novosibirsk) or +7 (3852) 53-49-09 (Barnaul) to get a detailed consultation, or come to the salon "OUT OF THE ROADS" in Novosibirsk or Barnaul to talk with employees personally.
Data used from the official AVANTIS website
If you decide to buy an ATV, then know that for stable and proper operation of all its mechanisms, you need to change the oil regularly. This applies not only to budget Chinese motorbikes, but also to expensive models from Japanese and European manufacturers. ATV parts will last much longer if you use quality lubricants. nine0003
Oil is poured into the following elements of the motorbike:
Lubricants are strongly discouraged because they not only reduce friction between vehicle parts, but also serve to remove heat, which helps prevent overheating.
Refer to the manufacturer's documentation for the best oil for your ATV model. Each bike has its own requirements for lubricants, and therefore it is recommended to study them carefully.
Let's take a look at the three main types of ATV oils:
Each rider has the right to choose which oil is better to fill in ATVs 200 cubic meters and their other analogues.
But still, it is not recommended to save on the composition, since the premature replacement of the vehicle engine will cost much more. nine0003
Motor oils for ATVs for 110, 125 cubic meters Castrol managed to recommend well both among ordinary motorists and professional riders. This lubricant is designed specifically for modern 4-stroke motorbike engines. The presence of special additives in the composition of the oil reliably protects the engine from wear even under the most extreme operating conditions.
It is recommended to use only high temperature oils with increased density in the ATV CVT. Such a lubricant should leave a dense oil film on the surface and in no case be splashed. It is worth pouring gear oil with a viscosity of 75W9 into the gearbox and gearbox of the ATV0. This type of lubricant is suitable for most motorcycle models, and therefore many manufacturers recommend it. For more information, please refer to the official vehicle owner's manual.
Please note that if your ATV model is equipped with a manual transmission, then engine oil should be poured into it. Gear oil, in turn, is suitable for automatic and semi-automatic boxes.
Changing the oil in a 110cc or 125cc children's ATV is a very simple task that you can do yourself if you wish. This procedure is performed as follows:
