ds 650 wont star only backfier
#1
#2
I am betting you have sheared off the crankshaft keyway - it's a common problem in these bikes - I have had it happen a couple of times. When it does happen the timing goes out causing the engine to backfire. You need to get the engine to TDC and lock it- insert a special bolt under the gearshifter in the crank. Then remove the side cover by the brake pedal, Pay attention how everything comes apart, it needs to go back together a certain way. Then remove the flywheel, you will need a special tool to do this. They can be bought off ebay. Inspect the crank, I am betting that the timing has jumped when the key broke.
#3
I am betting you have sheared off the crankshaft keyway - it's a common problem in these bikes - I have had it happen a couple of times. When it does happen the timing goes out causing the engine to backfire. You need to get the engine to TDC and lock it- insert a special bolt under the gearshifter in the crank. Then remove the side cover by the brake pedal, Pay attention how everything comes apart, it needs to go back together a certain way. Then remove the flywheel, you will need a special tool to do this. They can be bought off ebay. Inspect the crank, I am betting that the timing has jumped when the key broke.
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dalebergman@wildblue.net
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
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10-04-2016 06:57 PM
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