Why is my snowmobile going backwards? - Page 2 - Snowmobile Forum: Your #1 Snowmobile Forum

sovatj · 07-08-2009, 12:49 PM

Quote:

Originally Posted by BC_Dan

If the timing or the ECU was messed up, it could be running backwards. That is exactly how PERC in the newer Polaris sleds work (along with ski-doo and the new arctic cats).

a 2-stroke doesn't care what direction it's running when it's running, but timing is everything... I would start there.

the reason why i love 2 strokes, they dont care

danno583 · 07-08-2009, 09:53 PM

ss440? hows that wind shield when you are going fast, does it like to buckle?

danbroke · 08-11-2009, 12:57 AM

Is the pull rope wound the right way? Could have the rope backwards witch in turns spins the motor wrong way.

jkeiffer · 08-11-2009, 04:51 PM

Quote:

Originally Posted by danbroke

Is the pull rope wound the right way? Could have the rope backwards witch in turns spins the motor wrong way.

you took the words right out of my mouth.

how does it start up? does it start really well and then change? if not then you are starting it spinning in the wrong direction.

let us know,
jkeiffer

REVO of Rustler · 08-11-2009, 05:18 PM

I have the pull chord on the right way. When the motor starts, the crankshaft will all of a sudden kick back and start spinning in the opposite direction.

jkeiffer · 08-11-2009, 05:31 PM

definately sounds like it is to far advanced to completely reverse direction. I am not very familiar with these snowmobile engines yet so I am a novice and cannot help you with the timing procedures.

hope you get this figured out.

when you set the points gap is it with the piston at TDC? or are you going by a marking on the flywheel?

**RJ Gleason** · 08-11-2009, 06:37 PM

You definitely have the timing too far advanced then.

danbroke · 08-11-2009, 11:27 PM

yeppers sounds screwed up too me! U can try too run on 1 cylinder and c witch one is the problem. If 1 runs and dont kick back and the other does well u know witch one. Then u get too have fun settin it all

It could even be the cam plate moved and be both cylinders off.

**RJ Gleason** · 08-12-2009, 09:19 AM

Base setting for timing is 16 degrees BTDC on #1 cyl.

clodev · 08-13-2009, 12:24 AM

I have to put this in. I got the same sled for my wife. Stripped it down and redid the whole thing for her including a new seat cover. Repainted it also plus added a diamond plated belly pan.(had to it was rusted really bad) I picked up an 83 that ran as a parts sled. Starts every time never a problem. (until i bring it to RJ's up north)

YamahaSS440 · 08-13-2009, 11:30 AM

Dont know if you still look but yes the windshield does push in right in the middle at the top. It doesnt really bother me that much but yes it does buckle a bit.

REVO of Rustler · 10-03-2009, 06:56 PM

Quote:

Originally Posted by jkeiffer

definately sounds like it is to far advanced to completely reverse direction. I am not very familiar with these snowmobile engines yet so I am a novice and cannot help you with the timing procedures.

hope you get this figured out.

when you set the points gap is it with the piston at TDC? or are you going by a marking on the flywheel?

I'm going by a marking on the flywheel. I really want to get this running by winter!

agfirecat · 10-04-2009, 08:52 PM

what did the manual show as to what marks to line up ? my vmax 540 doesnt have those tabs. it has a line on stator wich you line up with a line on the motor that you could not see with the flywheel still on. my guess by looking at it would be to line that tab on the stator in between the two on the motor.
if yours does not have index marks on the face of the stator plate. let us now how ya make out.

YamahaSS440 · 10-05-2009, 05:37 PM

To bad i just sold my old ss otherwise i would have taken a pic of it for you.