To increase the governed speed of your LCT engine there are two choices:
- move the governor spring from the 3rd hole to the 4th hole outermost hole) in the governor arm which will increase engine rpm by approx 200 rpm.
- move the fixed mount for the governor spring away from the governor arm by a very small amount to get a variable rpm increase.
The governor arm and spring are mounted under the gas tank, so the snow shielding around the tank needs to be removed for access. The governor arm and spring mounting are close to the PTO "front" side of the engine. Attached are some pics of my 414cc engine. The first pic shows the stock setup for my machine that was 3,450 rpm instead of 3,600 or 3,700 rpm. The second pic shows the spring moved to the outer hole on the governor arm which brought my rpm to my target 3,700 rpm.
LCT engines like to run fast so are spec'd to 3,850 +/- 50 rpm, so last year I adjusted the fixed end of spring to increase rpm to 3,900 rpm. I like that setting even better than 3,700 rpm. Produces lots of power to run a 6 bladed impeller and a 3.25" (SHO is 2.75" stock) engine pulley giving 1,447 impeller rpm and an impeller tip speed of 60 mph.
I do not worry about an engine breakin period and LCT do not give any info for that. First oil change was within the month. Back in the day we used to follow the manufacturers guidelines for new and modified engines, but that was a long time ago.
very useful info.
thank you Town.