lord lucan
Member
- Joined
- Apr 16, 2017
- Threads
- 4
- Messages
- 15
Hi,
I recently acquired a Mountfield HP185 which starts but runs with a surging/thrumming idle and I'm trying to get to the bottom of the cause.
I've removed and cleaned the spark plug; it was a bit sooty but not too bad, drained out the old gas and put some fresh in and run it for 2-3 minutes. I've removed and washed and dried the air filter. I've adjusted the metal plinth for the idle speed and this seems to have helped slightly but it's not running smoothly. I've removed and cleaned the plastic carburettor too.
What steps would you suggest trying next? Should I run the mower for longer to get the fresh fuel all the way through the line and carb?
Should I replace the spark plug anyway? Also I guess an oil change can't do any harm right?
Any help would be appreciated. Thanks
I recently acquired a Mountfield HP185 which starts but runs with a surging/thrumming idle and I'm trying to get to the bottom of the cause.
I've removed and cleaned the spark plug; it was a bit sooty but not too bad, drained out the old gas and put some fresh in and run it for 2-3 minutes. I've removed and washed and dried the air filter. I've adjusted the metal plinth for the idle speed and this seems to have helped slightly but it's not running smoothly. I've removed and cleaned the plastic carburettor too.
What steps would you suggest trying next? Should I run the mower for longer to get the fresh fuel all the way through the line and carb?
Should I replace the spark plug anyway? Also I guess an oil change can't do any harm right?
Any help would be appreciated. Thanks