I have what I thought was a R2500 Mitsubishi. Now, from Valley Power, I"m thinking it could be a Suzue, the engine is stamped 2DR-10C and the body is stamped M51-11717. The oil reservoir on the fuel pump was getting high and thin, so I took the diaphragm pump off and can"t find any serial numbers on it. Any ideas on what I have and where to find parts (the rebuild kit at least), manuals, and hopefully the correct oil filter (the previous owner had told me a part number that was BS its a canister filter and he gave me a thread on filter number..., and I"m now due) I"ll add photos later, thanks.