I'm not to good with electronics but to test the hand warmers would you do a continuity/ohm test to see if they are any good or not? I would think no continuity=junk?

My 1981 stock 440 LF did 72 mph in a radar run 1/8th mile track non studded track, and was still gaining speed at the end. It seems like only 75 in a mile run is very slow. Should at least be up in the 80's mph

1980 440 LF. I burnt a piston on the clutch side, the cylinder is also scored pretty bad. I have a half tore down engine still good out of a 1981 440 LF are the pistons and cylinders the same? How hard is it to remove and replace a piston on one of these? I have replaced pistons on Polaris fuji 488c...

If you want to do some reading here are 2 good articles on snowmobile 2 stroke oil. There is a difference between outboard motor 2 stroke and snowmobile 2 stroke oils. I run older sleds and feel any good TCW3 is good in fact I run the cheap Wally world Super Tec 2 cycle oil. But if I were to get a n...

After some checking around I found one place that said some sleds run unregulated power from the lighting coil to the hand warmers for max heat, but run regulated power to the thumb warmer so it doesn't melt the plastic throttle lever. And if you have a high low switch it also runs through a resiste...

If I am correct you should have 12volts unregulated from the engine to the switch? Or does the power come from the lighting circuit? I am trying to help someone with a polaris get his hand warmers working.

I am trying to figure out what year sled this is. It is a Polaris "Indy Sport Touring" the Id # on the side running board tag is 4XAST4DS7XCO84367 The engine number is EC443PM00254293 it is fan cooled, the engine serial number is 9902438 does anyone know what year this is? The date of manu...

Wow minus 21 (F) this morning. I wonder if my car will start.

Use the blue wrench. (cutting torch)

BTW how much did that tool cost? I am planning on making the home made version. I heard that when you sync that way your sled really idles sweet.

Yea frost on the pumpkin this morning -15 (F) -22 with wind chill here in NW Wisconsin. I think I'll just stay in today and keep stoking the wood stove. The worst thing about extreme cold is when you try and run machinery $hit breaks.

Using that tool with needing the air box off, how much do you compensate for having the air box off with the idle speed? Or once they are sync'd can you just adjust the idle with the air box back on as long as you turn the screws the exact same amount? Kind of seems to be defeating the purpose.

I'm sure it is the same principle. On my 1981 LF the Mikuni's had a little pipe plug you could take out on the engine side of the carbs and put a little fitting in to hook your sync hose to them and then cap them off with a little rubber plug. I think your tool you just put the thing over the air bo...

You could check out this link.
http://www.mfgsupply.com/m/c/216097A.html?id=ewLXFi65

Some damn good info on this link, here is some of it. http://snowmobile.off-road.com/snowmobile/...b%20sync%20tool Rough Tuning Adjustment: - Remove the airbox for free access to the carburetors. - Unscrew the idle speed screws, (big knurled knobs on the side of the carburetors you can turn with you...