Alternating chain direction

[xerxes]

I just installed the ignition module for this Husky 450 and was setting the idle on the carb I noticed that when the motor idles way down and the chain stops, it then reverses direction. When I stop the motor and restart, it reverses again.

 

[ammoaddict]

Oh, that's for back cuts. Seriously, that's crazy. I've never seen anything like that. I hope you get some good answers. Honestly if you hadn't posted the video, I wouldn't have believed it.

Sent from my Moto G (4) using Tapatalk

 

[Jkstihl]

Can we please get a vid of the chain on backwards cutting a round.

 

[Jkstihl]

Timing is def off u can hear it.

 

[xerxes]

oh jeez, that sounds like a deep rabbit hole...

 

[Canyon Angler]

That's so if you get it pinched, you can get it unpinched. Just throw 'er in reverse!

 

[cus_deluxe]

something is up with ur timing or something. you can hear the moment the engine stalls and then starts to run backwards (yes they will do that). is the coil oem? id check that ur flywheel is located correctly also.

 

[MacAttack]

Cool!

I'd just be careful that your clutch doesn't loosen up the left hand thread nut and go flying off...

 

[Tim321]

I just installed the ignition module for this Husky 450 and was setting the idle on the carb I noticed that when the motor idles way down and the chain stops, it then reverses direction. When I stop the motor and restart, it reverses again.

I just installed the ignition module for this Husky 450 and was setting the idle on the carb I noticed that when the motor idles way down and the chain stops, it then reverses direction. When I stop the motor and restart, it reverses again.

A lot of snowmobiles can reverse direction at a push of a button. It slows the engine then advances the timing to backfire the motor, once running backwards it works just fine.

 

[Brent Nowell]

A lot of snowmobiles can reverse direction at a push of a button. It slows the engine then advances the timing to backfire the motor, once running backwards it works just fine.

Nailed it
I’ve seen this with two stroke bikes too, guy puts it in first and starts going backwards lol. Dead giveaway is how bad it runs
It is def a timing issue when it happens, yes two strokes are reversible engines!

 

[kevin j]

Old AMF golf carts got reversed by shifting the polarity of the starters of the cranked it in reversed and then fired up in the engine ran backwards

 

[MacAttack]

Old AMF golf carts got reversed by shifting the polarity of the starters of the cranked it in reversed and then fired up in the engine ran backwards

At the golf course i worked at years ago, they had 2 stroke Yamaha carts that went in reverse the same way. I seem to recall they had two ignition coils. It was simpler and more reliable than a shifter.

 

[Vintage Engine Repairs]

That is absolutely fantastic I could only imagine your surprise when it span backwards !

hopefully an easy fix and no doubt the pros here will supply you with the solution. Best of luck and please keep us updated!

 

[Conquistador3]

Try removing the new ignition module, reinstalling and gapping it using a thick business card (laminated ones are the best).

Also a question: the saw itself looks extremely well kept. Is it low hours or did you just restore it to a smooth finish?

 

[xerxes]

I will try to re-gap. I know the gap was tight when I installed the new ignition.

 

[bigbeve]

Put the chain on backwards, and wear safety! I imagine there will be a lot more sawdust coming back at you!