Methusala Posted January 18 Share Posted January 18 G'day All, I inherited a chainsaw, all working well until the other day. Started but gave up after about 5mins. Not overheated or lack of oil mix. I tested it for spark but none. Stripped the covers off, all wiring appeared sound. Ok, must be the module. Acquired a Chinese knock-off...$20. Installed it but still no spark. They included all wiring and even a spark plug. Installed with 0.3mm gap to the flywheel, checked resistance to primary at about 1.5 ohms-correct to specs. Resistance to spark side 22.5ohms, also correct. The ignition On/Off breaker is also operating correctly. Such a simple system so why doesn't it work? Any gurus out there? Nev perhaps... I dunno. Don Link to comment Share on other sites More sharing options...
onetrack Posted January 18 Share Posted January 18 (edited) I've never used a flywheel to coil spark gap as low as 0.03mm, always around 0.5mm. Are the flywheel and magnets spotlessly clean, and not rusty? Surface rust will bugger up the spark generation. I spray all flywheels and magnets with some anti-corrosion spray to keep them from going rusty. Is the kill switch working properly, and not shorted out somewhere? Edited January 18 by onetrack Link to comment Share on other sites More sharing options...
pmccarthy Posted January 18 Share Posted January 18 I got excited, thought this post was about a motorbike! 2 1 Link to comment Share on other sites More sharing options...
old man emu Posted January 18 Share Posted January 18 11 hours ago, pmccarthy said: I got excited, thought this post was about a motorbike! That's because you've got a one track mind, and it's dirt. 2 Link to comment Share on other sites More sharing options...
Jerry_Atrick Posted January 18 Share Posted January 18 You can certainly read me like a book! A cheap one, at that 1 Link to comment Share on other sites More sharing options...
facthunter Posted January 19 Share Posted January 19 A premature expectation PMC? Chainsaw-wise . Check the spark in the dark. It's hard to see some of the Capacitor discharge fine sparks. Check the plug hasn't picked up a bit of flaked carbon when screwing it in. IF you used anti seize (which you should ), did some get on the plug insulator internally? Nev 1 Link to comment Share on other sites More sharing options...
Methusala Posted January 19 Author Share Posted January 19 Will check it in the dark. Everything is clean and like new. Thanks for the comments (and laughs**). 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now