fuel and air lines are all shot. need help in where new lines go? thanks
Get some Tygon line for all the fuel and primer line. 3/16 for the fuel lines, 1/8 or 3/32 for the primer. Many auto parts stores now carry it, it should be yellow in color and say Tygon right on it. You can normally get it in 1 ft increments.
Not sure what you mean by "air" lines though. If you mean the pulse line on the crankcase, use 1/4 automotive fuel line with a hose clamp on each end.
"IT IS A 1979 MODEL. ALL HOSES ARE PRETTY MUCH GONE. SEE OUTLET ON TOP OF FUEL TANK. 2 OUTLETS ON DASH PRIMER. 2 OUTLETS ON CARB, ONE ON TOP AND ONE ON SIDE. 2 SMALL OUTLETS ON MANIFOLD. AND ONE OUTLET UNDER THE STARTER SOLENOID. IF YOU CAN TELL ME HOW TO RUN ALL THE DIFFERENT HOSES, THAT WOULD BE GREAT."
I told him I would post it to the board so the real experts could help him.
1969 Mark III 400 with Sachs 368/370 single and electric start.
1971 Mark III 400 with Hirth 399cc twin and electric start.
1971 Stinger II 400 with CCW 400cc twin and electric start.
Alright, here is the best I can do visually as I don't have any sleds with Walbro's anymore. Mine are all Mikuni's. It isn't really that complicated.
You will have the following things that go in the tank.
Out of the parts book.
Not sure what you'll have to do to see them original size, I uploaded them full size. Very big. Admin may have to help there.
Long and short, you have a 3/16 main fuel line that comes out of the tank. That will get a T in it for the primer. Then it will run to the inlet for the fuel pump, which is built into the carb in the case of the Walbro. The primer line 1/8 will go from the T to the Primer to the intake. There are two nipples on the intake for the primer. You'll need a 1/8 T there too. That will let you get fuel to both sides of the intake. There is also a pulse line (makes the fuel pump work) that needs to run to the top of the carb. This was the 1/4 automotive fuel line I spoke of.
If you PM me your phone number, I can call you and talk you through it.
I'll see if I can dig up a under hood shot of a Walbro equiped sled, but here is a Mikuni based one. The fuel pump for the Mic's are remote and not part of the carb like the Walbro's are.
Note: the lengths given in the parts book aren't always exactly right. You may have to do some fitting. Just make sure the line stays out of the secondary and off the exhaust