How To - Tuneup (wetbike, seaflash, jetstar, DT-50/60)
Topic: So, your wetbike feels like it needs a tuneup? How do you do it?
Expertise Required: Beginner
Estimated Time: How long will it take?
- Probably 2 hours if you are extremely thorough.
- If you just do a QUICKIE (change plugs, fuel filter and primer) - about 1 hour.
Parts Needed: What parts are needed - or is there a tuneup kit available?
- Spark Plugs - NGKBR8HS - gapped to .025 inch (any larger will overwork the coil)
- Fuel Filter - I prefer a nice see-through, paper-type of filter. (Ethanol eats the glue out of the cheap ones)
- Primer Bulb - I prefer to run the ones from Mercury Marine or Moeller
- Fuel Line - I prefer the USCG line (big stuff) that's now ethanol resistant
- Fuel Line - Tygon - Needed if you plan to replace the fuel pickup tube
- AntiSeize - the kind made for spark plugs
- Dialectic Grease - A little dab'll do ya
- Gaskets - Carburetor gaskets may be needed if you tear them when removing the carburetors (to clean them out). If you are careful you'll be OK
- Spark Plug Wrench - 13/16
- Spark Plug Gapping Tool
- Side-cutting Pliers (Dikes)
- Short 12mm wrench for carburetor nuts
- 10mm for throttle cable (unless yours now has 11mm nuts)
- Large Crescent (12 inch) and 9/16 wrench for anti-siphon valve
Before You Begin: Be honest - is this task something you can handle yourself. If you are a gorilla - be careful with the sparkplugs and any fasteners. Also - be careful not to break/bend anything - especially the nylon fuel pump nipples.
- UNHOOK THE BATTERY BEFORE YOU DO ANYTHING
- Pull the spark plugs and put the new ones in.
- Be sure to put a little dab of dialectic grease on the threads.
- Notice how that stuff gets everywhere - just like 5200.
- Tighten down the NEW sparkplugs - don't try to wring them off.
- Unscrew the lower spark plug cap.
- Cut about 1/4" off the end - so that you now can have fresh contact when you screw the cap back on.
- Screw cap back on until it snugs up nicely.
- Do the same for the other spark plug wire
- Get a "dab" of dialectic grease and put on the spark plug porcelains. This will help keep the boots from sticking - and will help keep water out. Then slide the spark plug caps back on the sparkplugs
- Remove the old fuel filter and install a new one
- Chive on.
- Pull the motor first - so much easier to do a full tuneup. Only takes about 20 minutes
- Pull the fuel pickup tube out of the tank, replace it and clean out the strainer (10-0510-358)
- Pull the carburetors, clean out the bowls, clean out the Nozzles (10-3011-552), and blow air through all passages
- Carefully remove ALL of the ground wires, clean them up with a wire brush and reconnect
- Carefully remove the starter ground wire, clean it up, and reconnect it to the starter base bracket (very important)
- Drain the grease out of the pump and replace
- Use a new motorplate-to-pump gasket (10-3012-162) when going back together
- Pull that impeller and cleanup all of the edges and/or replace it
- Make sure your wear ring is in good shape - replace if needed
- Wax or WD-40 those skis - seriously
- Clean those battery terminals and cable ends prior to reassembly
Put everything back together and let it rip.
Copyright 2012 Capt'n Obveeus