M40c tohatsu

[Dbuck]

little rough on low idle rough on acceleration then lines out. Cleaned carburateur need a little help with this. Would really appreciate some advice,Thanks

 

[pvanv]

What method did you use to clean the carb? Did you check link and sync? Did you check ignition?

 

[Sea Rider]

Welcome to Iboats,

Was doing so when on muffs, barrel or on water ? Lines out means OB smooths out when opening the throttle ?

Happy boating

 

[TOHATSU GURU]

Not a smooth running model engine so,it may be normal. Pull a spark plug off of one cylinder while the engine is running to test for a reason why it may be rough electrically or mechanically. Otherwise you take the carb off and clean it as a first step.

 

[Sea Rider]

If carb was cleaned to prfection, check carb/timing advance synch, re adjust if needed. Check that all plastic bits from throttle arm to carb are not worn out as to have excessive side or up/down play for a smooth and even acceleration. Replace any if required. Check spark plugs condition, if old, excessively burnt or fouled replace both. KGK BR7-HS-10 with electrode gapped tight to 1.0 mm with feeler gauge.

Happy Boating