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Yamaha replacement fuel lines
After a 6 or so season hiatus I recently got back into sledding. I picked up a used (and slightly abused) 2003 Viper. Doing some routine maintenance I decided to replace the hard and crusty factory fuel lines from the pump to the carbs. I wasn't able to find the correct size immediately and found little info on the web (at least none that was correct)
People kept telling me the line from pump to carb was 1/4", but it was obviously too loose, and leaked like a sieve. I finally was able to track down the correct sizing and get some actual Yamaha bulk replacement lines from my local dealer. It comes in a 26 foot roll from Yamaha, but they sold it to me by the foot @ $2.59/foot (Canadian funds). 2 feet was enough to do the 3 carbs. Note that the O.D. of the Yamaha line is about the same as good quality 1/4" line, so the spring clamps fit about the same.
The hose size from pump to carb is 5MM I.D. (7MM O.D.) Yamaha Part # IQG-00002-60-20
The hose size from tank to Pump is 7MM I.D. (11MM O.D.) Yamaha Part # IQG-00003-60-20
I can't stress enough the importance of using the correct size of line. The 1/4" stuff leaked unless it was double clamped and even then was sketchy at best... huge fire hazard. The Yamaha replacement line won't leak even without being clamped at all (use clamps regardless). The best part is the wall thickness. When compared to Polaris replacement line it is noticeably heavier and won't kink on tight bends. See the pics below for a comparison.
Here you can see the wall is about 15% thicker than "other" brand's line...
Yamaha line can take a much tighter bend without kinking...
Finished lines on the Viper...
Hopefully this helps someone else get the right lines and not burn their sled down on the trail.
After a 6 or so season hiatus I recently got back into sledding. I picked up a used (and slightly abused) 2003 Viper. Doing some routine maintenance I decided to replace the hard and crusty factory fuel lines from the pump to the carbs. I wasn't able to find the correct size immediately and found little info on the web (at least none that was correct)
People kept telling me the line from pump to carb was 1/4", but it was obviously too loose, and leaked like a sieve. I finally was able to track down the correct sizing and get some actual Yamaha bulk replacement lines from my local dealer. It comes in a 26 foot roll from Yamaha, but they sold it to me by the foot @ $2.59/foot (Canadian funds). 2 feet was enough to do the 3 carbs. Note that the O.D. of the Yamaha line is about the same as good quality 1/4" line, so the spring clamps fit about the same.
The hose size from pump to carb is 5MM I.D. (7MM O.D.) Yamaha Part # IQG-00002-60-20
The hose size from tank to Pump is 7MM I.D. (11MM O.D.) Yamaha Part # IQG-00003-60-20
I can't stress enough the importance of using the correct size of line. The 1/4" stuff leaked unless it was double clamped and even then was sketchy at best... huge fire hazard. The Yamaha replacement line won't leak even without being clamped at all (use clamps regardless). The best part is the wall thickness. When compared to Polaris replacement line it is noticeably heavier and won't kink on tight bends. See the pics below for a comparison.
Here you can see the wall is about 15% thicker than "other" brand's line...
Yamaha line can take a much tighter bend without kinking...
Finished lines on the Viper...
Hopefully this helps someone else get the right lines and not burn their sled down on the trail.
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