Bought this for my old Mastercraft Snowblower. It wouldn't run with the choke open, was surging and stalled repeatedly while running at half choke once warm. When I took the bowl off the carb, there was black sediment in it from the elastomers disintegrating. When I started researching an "O" ring kit, I found this entire carb at a lower cost, so went with it. Took me about an hour to install. It did come with the manifold gasket. Some other reviews claimed their's did not. The two holes for the shroud mounts screws were not threaded as noted in many other reviews. One reviewer said he just put the screws in and they self tapped. Since I already have a tap kit, I threaded mine. SAE 8-32 is the thread size for the screws from my OEM carb. There are two pieces from the original carb that need to be removed and attached to the new one. The carb shroud mounting bracket and the choke linkage. I have attached some photos showing the old and new carb for reference. This was a real easy install, but I only gave 4 stars because of the non-threaded holes for the shroud bracket. If it is the manufacturer's intent for these holes to be self tapped by the OEM screws, there should be some information to that effect so the buyer knows the proper method. Once installed, my machine fired right up and ran better than I have ever seen it. No snow to try it on at the moment, so I just ran it up and down the driveway to get it warm. Was able to run it with no choke almost immediately (it's just above freezing here today). I did not have to adjust the idle, or fuel mixture screws even after running to get the engine hot. They were both set at 1 and a half turns out from the factory. Way easier than a carb overhaul and I am not that mechanically inclined.
| Manufacturer | AUTOKAY |
|---|---|
| Place of Business | SHENZHEN, GUANGDONG 518109,CN |
| Brand | AUTOKAY |
| Parcel Dimensions | 11.1 x 8.99 x 8.31 cm; 240 g |
| Item model number | 640349 640052 640054 |
| Is discontinued by manufacturer | No |
| Manufacturer part number | 640349 640052 640054 |
| Item Weight | 240 g |
