Join Date: Dec 2012
Location: Cedar City UT
Model: 1988 GL 1500, 2012 GL1800, 1977 GL1000 2012 KLR 650
That is a great price. Jump on it!
My 88 sat for 8 years before I got it. If he stored it with gas in the carbs, they will need to be pulled, everything pulled apart and cleaned. Sea Foam will not clean all the small passages. If is sat for a year, then Sea Foam normally works. I just picked up a snowmobile that sat for a year with gas in the carbs. It started and ran, but not past half throttle. I had Sea Foam in the tank and after a few miles, it would run past half throttle. After two tanks of fuel with Sea Foam, it still was not right. I pulled the carbs and found that the low speed jets were still plugged up some. After a good cleaning of all the jets and passages, the thing runs like a top now. Way better then before the cleaning. Save yourself the frustration. Just pull the carbs and clean them.
Pulling the fuel tank on a 1500 is a bit of work. The whole rear of the bike needs to come off. The tank comes out the back of the bike. Mine was full of rust and stuff that used to be gas. Got it cleaned out and it is good as new. Below is a photo with my tank removed.
I put about 1K back in the bike after I got it running. I did a lot more work then just getting it running. I did the extra work and changed all the filters, fuel lines, coolant hoses, timing belts, rebuilt the breaks and master cylinders and new tires. This was a So Cal high desert bike. The dry heat kills rubber parts, so that is why I went to the extent that I did. I did not want to be replacing things every year as they started to go bad.
As others have said, get a shop manual. Clean the carb, get it running, replace the timing belts, and then you can go from there on what other parts may need replacing.
2012 GL 1800 Level 3
1988 GL 1500
1977 GL 1000
2012 KLR 650