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Hi,
New to this forum. Just picked up a 1973 Fastwin 18hp that hasn't been run in over 30 years. Did the usual, pulled and cleaned the carburetor, replaced the two coils, points looked pretty good, and changed lower unit oil. Fired her up and got her running. The problem is no water. So, I pulled the lower unit and checked the impeller which didn't look bad, but I noticed it didn't have much of a key way in the drive shaft. It was kind of like a little pin sticking out, maybe an 1/8 of an inch or less. It is enough to catch the impeller, but it seems awfully small, particularly where the impeller cutout is for the key way is much larger. I haven't tried pulling the pin out yet, looks like I may be able to get a pair of pliers on the head of it. I ***ume this pin comes out? Is it supposed to be this small? I am wondering if the impeller is slipping over the key way/pin and isn't spinning the way it is supposed to, thus causing no water to pump. Anyone with any experience on these? Also, it doesn't appear this unit uses a thermostat, because I didn't see any in the parts list, but it does look like it has a housing for it, just haven't opened it yet. Any info on this motor would be greatly appreciated, and thanks in advance.
New to this forum. Just picked up a 1973 Fastwin 18hp that hasn't been run in over 30 years. Did the usual, pulled and cleaned the carburetor, replaced the two coils, points looked pretty good, and changed lower unit oil. Fired her up and got her running. The problem is no water. So, I pulled the lower unit and checked the impeller which didn't look bad, but I noticed it didn't have much of a key way in the drive shaft. It was kind of like a little pin sticking out, maybe an 1/8 of an inch or less. It is enough to catch the impeller, but it seems awfully small, particularly where the impeller cutout is for the key way is much larger. I haven't tried pulling the pin out yet, looks like I may be able to get a pair of pliers on the head of it. I ***ume this pin comes out? Is it supposed to be this small? I am wondering if the impeller is slipping over the key way/pin and isn't spinning the way it is supposed to, thus causing no water to pump. Anyone with any experience on these? Also, it doesn't appear this unit uses a thermostat, because I didn't see any in the parts list, but it does look like it has a housing for it, just haven't opened it yet. Any info on this motor would be greatly appreciated, and thanks in advance.
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