1999-2004 Honda TRX400EX FourTrax Service Manual, Page 170Get this manual
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TIRE REPAIR
Use the manufacturer's instructions for the tire repair kit you are usingIf your kit does not have instructions, use the procedures provided hereCheck the tire for puncturing objectsChalk mark the punctured area and remove the puncturing objectInspect and measure the injuryTire repairs for injuries lager than 15 mm (518 in) should be section repairSection repairs should be done by professional tire repair shopIf the injury is smaller than 15 mm (58in)proceed with the repair as described hereInstall rubber plug into the injury as follows: Apply cement to plug inserting needle and work the needle into the injury to clean and lubricate itDo this three timesDo not let the cement dry
Insert and center rubber plug through the eye of the inserting needleApply cement to the rubber plugPush the inserting needle with plug into the injury until the plug is slightly above the tireTwist the needle and remove it from the tire; the plug will stay in the tireTrim the plug mm (114 in) above the tire surfaceRepeat the above procedure if the puncture is largeDo not use more than two plugs per injuryAllow the repair to dryDrying time will vary with air temperatureRefer to the tire repair kit manufacturer's recommendationsInflate the tire and test the seal by dabbing small amount of cement around the plugEscaping air will cause bubble in the cementIf there is leakage, remove the tire (page 12-7) and apply cold patch to the inside of the tire as describedIf plug has been inserted, trim it even with the inner tire surfaceTemporarily place rubber patch that is at least twice the size of the puncture over the injuryMake mark around the patch, slightly larger than the patch itselfRough the area marked inside the tire with tire buffer or wire brushClean the rubber dust from the buffed area