Hi guys.
I recently got a garage find capstan drive Lawn Boy Model L21ZSNA that hadn't run in a few years. The engine was really dirty and had no air filter or cover.
It would not start but it had 90# of compression and had good spark. I cleaned the carb and got a filter on it and it started right up. It would pull on concrete but just spun on the tires in the grass. The drive rollers were really worn down. I have never had any experience with this kind of drive before. I didn't know if I should try to adjust the tension on the rollers or order new ones. I'm not really sure how they are adjusted but there is a rod that runs down along side of the handle bars with a set screw elbow type of thing that I guess you can move to adjust the length of of the rod. Also it looks like the drive rollers are held in with little roll pins. Do you take a nail and hammer to get them out or what is the best way to get them out? Also one side has a plastic plug with a grease fitting on it but the other side has nothing and is full of dirt and grass. Is it important to have these plugs in place? Any information and tips for replacing rollers and adjusting them would be greatly appreciated. I did notice on the Lawn Boy master parts viewer that there was 2 different part no.s for each drive roller. Are they different diameters for different speeds or for some other reason ? I found a set on line for $35 plus shipping. Some places wanted $40 or $50 a piece for them. Thank you.
Jerry
I recently got a garage find capstan drive Lawn Boy Model L21ZSNA that hadn't run in a few years. The engine was really dirty and had no air filter or cover.
It would not start but it had 90# of compression and had good spark. I cleaned the carb and got a filter on it and it started right up. It would pull on concrete but just spun on the tires in the grass. The drive rollers were really worn down. I have never had any experience with this kind of drive before. I didn't know if I should try to adjust the tension on the rollers or order new ones. I'm not really sure how they are adjusted but there is a rod that runs down along side of the handle bars with a set screw elbow type of thing that I guess you can move to adjust the length of of the rod. Also it looks like the drive rollers are held in with little roll pins. Do you take a nail and hammer to get them out or what is the best way to get them out? Also one side has a plastic plug with a grease fitting on it but the other side has nothing and is full of dirt and grass. Is it important to have these plugs in place? Any information and tips for replacing rollers and adjusting them would be greatly appreciated. I did notice on the Lawn Boy master parts viewer that there was 2 different part no.s for each drive roller. Are they different diameters for different speeds or for some other reason ? I found a set on line for $35 plus shipping. Some places wanted $40 or $50 a piece for them. Thank you.
Jerry