Reversed polarity problems. Dear ATVC: Hello; new here and embarrassed to admit it but I hooked the battery up backwards to the battery charger and now my ATV won’t start. I have good spark and fuel but it refuses to start. Please help, thanks so much! This seems like a straightforward enough question but to […] More »

A tale of many PZs. Dear ATVC: I was out riding my 1988 Honda TRX200sx and it started stalling after about 2 hours of riding and when I tried to give it more throttle it started to bog down. I had a friend help to find out the problem and we think it is the […] More »

What is this thing? Dear ATVC: Okay I’ve got one for you. I was at the races this past weekend and noticed something I hope you can help identify. There were colorful machined metal cylinders that looked like they were screwed into the rear brake fluid reservoir. What are these things and what do they […] More »

Let’s do some decoding. Dear ATVC: I have a 2024 Honda TRX520FE and I have lost my keys. Yes both of them. Question – I pulled the ignition and there are two codes on the plastic housing on the outside of the ignition switch. “2XED50” and “R45” I know the format D50 would fit as […] More »

How far can you push tire and wheel size? Dear ATVC: I purchased a 2002 Polaris 500 HO new. It came with 25/8/12 tires on front and 25/11/10 tires on rear. Wondering if I can put 25/10/12 rims and tires on rear and not affect anything or hurt quad in any way. Thanks. So let’s […] More »

Ignition troubles can result in a lot of oddities. Dear ATVC: Hi, I am new here just looking for a little help. My apologies if this is not the right place to post. I have a Baja 400 Wilderness and replaced the voltage regulator (and I don’t believe it has anything to do with my […] More »

Let’s get to know the three types of spark plug terminal offered. Dear ATVC: I have a 1990 Kawasaki MULE model 2010 KAF 540c. I believe the original plug should be a NGK BP5ES and the end cap unscrews so the spark plug wire will slide on. The new BP5ES plugs don’t seem to have […] More »