Tensioner 43301403931

Remove chain bar cover and outer plate. Then remove the bar. you will see the chain adjustment parts in the housing. Remove the old parts and replace with the new ones. Install the bar and place chain on the bar. Replace all other parts in reverse order. Tighten the chain to the proper tension.

I removed the outer enclosure and chain/bar which allowed access to the tensioner and screw. I just unscrewed the old bent screw and put the new one in its place. There was a small clip that fit over end of the tensioner screw which keeps the screw from sliding out of its track. It is very easy to miss this clip which I almost did and it is a necessary part to make the tensioner screw work properly.

Took the chain cover off. Removed old parts and installed new parts. Very simple fix. The only problem was the parts shown for my model and serial number were wrong so I had to order the correct parts. I had to look at different model numbers to find the correct parts

Remove bar , install adjuster , replace bar 2 remove air cleaner cover , replace

Took it apart and installed new parts

1. Removed the cover to take off the chain.
2. Unscrewed the tensioner bolt and replaced.
3. Replaced the spark plug just as routine maintenance.

Took old bar off
Replaced tension screw and nut
Replaced new bar
Put on new chain
Replaced nuts to hold bar and chain on

Removed the sprocket guard
Loosened the tension on the blade and the bar
Remove the blade and bar
Remove the old tensioner and the adjustment screw
Install the new bar and chain
Install the sprocket guard

1: Remove air filter
2: Remove recoil starter assembly.
3: Loosen carburetor nuts
4: Disconnect throttle and choke linkage from carburetor
5: Unplug kill switch wiring
6: Remove carburetor from engine
7: Disassemble carburetor - note the location of low and high speed needles and tension springs
8: Pry out strainer from carburetor body
9: Soak metallic carburetor parts in carburetor cleaner.
10: Carefully scrape old gasket material from carburetor body, diaphragm and pump covers
11: Blow out all passages thoroughly and blow dry all parts.
12: Inspect tank and fuel line - clean
13: Reassemble carburetor with new strainer, pump and diaphragm
14: Install carburetor and reassemble saw in reverse order from disassembly.

Blade tensioner and adjuster were replaced at this time as well - had nothing to do with the starting problem.