Originally Posted By: 660mag
Originally Posted By: Blaze
How often do you have to adjust the valves and how difficult is the job for a typical user?
Very easy.
1. order the special feeler gauge #4180-893-6400 and a new valve cover gasket #4180-029 0500
2. remove the three t27s that hold the orange engine cover in place.
2. remove the sparkplug, and the t27 screw that holds the valve cover on.
3. set the piston to tdc of the compression stroke.(both rockers will be a little loose at this point.
4. using an 8mm wrench tighten the self locking nuts atop the rocker arms while measuring the lash with your new feeler gauge until the lach is corrected.
5. when done pull the rope a few times and recheck the lash, adjust as needed.
6.replace the vc gasket, and vc cover. new plug in.
7.Check the throttle cable at this point to be sure it's opening the carb all the way, adj if needed.
8.install the orange cover and yer off.
The decompression lobe on the cam will now also be back in spec and the rope should pull effortlessly.
The decarb service should be done at this time as well.
Oh yea it should be done about every 125hrs, but will all depend on the way the tool is being used.
clogged air filter, bad adjustment on the throttle cable, poor fuel, poor oil, or oil mix, low rpm use, trim line too long(leading to low rmp use), or short tripping(if you will) will all lead to a shorter interval.
If nothing is ever done wrong they can go much longer than 125hrs.
Quote:
3. set the piston to tdc of the compression stroke.(both rockers will be a little loose at this point.
Also remember to align the "ARROW" on the Flywheel with the leg of the coil...
In a home owner use situation I doubt the VC gasket will need replaced when adj the valves unless a ham fisted owner messes it up..
Originally Posted By: Blaze
How often do you have to adjust the valves and how difficult is the job for a typical user?
Very easy.
1. order the special feeler gauge #4180-893-6400 and a new valve cover gasket #4180-029 0500
2. remove the three t27s that hold the orange engine cover in place.
2. remove the sparkplug, and the t27 screw that holds the valve cover on.
3. set the piston to tdc of the compression stroke.(both rockers will be a little loose at this point.
4. using an 8mm wrench tighten the self locking nuts atop the rocker arms while measuring the lash with your new feeler gauge until the lach is corrected.
5. when done pull the rope a few times and recheck the lash, adjust as needed.
6.replace the vc gasket, and vc cover. new plug in.
7.Check the throttle cable at this point to be sure it's opening the carb all the way, adj if needed.
8.install the orange cover and yer off.
The decompression lobe on the cam will now also be back in spec and the rope should pull effortlessly.
The decarb service should be done at this time as well.
Oh yea it should be done about every 125hrs, but will all depend on the way the tool is being used.
clogged air filter, bad adjustment on the throttle cable, poor fuel, poor oil, or oil mix, low rpm use, trim line too long(leading to low rmp use), or short tripping(if you will) will all lead to a shorter interval.
If nothing is ever done wrong they can go much longer than 125hrs.
Quote:
3. set the piston to tdc of the compression stroke.(both rockers will be a little loose at this point.
Also remember to align the "ARROW" on the Flywheel with the leg of the coil...
In a home owner use situation I doubt the VC gasket will need replaced when adj the valves unless a ham fisted owner messes it up..