It's pretty easy and well worth it. On Dec 10, 2012, at 9:34 PM, Rmj wrote:
> Yes, sir. I wad glad I did not have to tear them down. > > Question: put a new head cover gasket on this summer. The old one was cracked > and leaking. Probably original. I cleaned all the surfaces even using scotch > brite. Used gasket cinch on one side as told to do by book. Used "X" pattern > and tightened in ~20 in/ lb increments. Noticed last week there is some > seepage in a couple of places. Take the tank off & retighten? I remember > having to do that with heads and valve covers on cars. > From: Graham Rogers > Sent: 12/10/2012 8:50 PM > To: [email protected] > Subject: Re: [Nighthawk Lovers] Re: 2000 Nighthawk 750 Low Milage issue > > In other words it needed a carb clean! > > On Dec 10, 2012, at 7:18 PM, Rmj wrote: > >> Meant to get back to you on mpg but have been traveling for work. My '92 750 >> had issues did not get but 35 mpg & would only idle with the choke set >> around 1/4 - 1/2 shut. I ran 1 complete can of seafoam to a full tank of >> gas, 1 fill up after the other, 2 tank fills only. That cleared a majority >> of the issues. After that a ran 1/2 can of seafoam every other fill up - 2 >> can only. Now I probably use 1/2 can once every other month. >> From: Hawaii Sean >> Sent: 12/10/2012 5:50 PM >> To: [email protected] >> Subject: [Nighthawk Lovers] Re: 2000 Nighthawk 750 Low Milage issue >> >> Wow - great detail and I'm going to play with my choke just to see how it >> works. >> >> Like everyone else I recommend changing the Oil and Oil Filter. Take a good >> look at the Air Filter and at a minimum make sure it's clean and if you can >> blow compressed air through it. If you don't have access to a compressor >> the cans will work fine. You'll also find a plastic tube coming out of the >> bottom of the air box, it will have a cap on the end sticking down just >> below the frame on the right side further back than the clutch. Pull the >> plug off and let it drain - caution nasty stuff will come out so have >> something you can throw away under it. Let all this drip out and then >> replace the plug. This tube is to drain liquid out of the air box. >> cleaning it out once every 10,000 miles is a good idea. >> >> Your millage should be in the low 40's. I have a 12 mile commute in traffic >> and get 42 to 44 miles to the gallon. Only 2 miles on the highway, the rest >> are 35MPH surface streets. When on the "highway" for extended periods (I >> live in Hawaii on Oahu, an extended period is about 30 miles) I get 50mpg if >> not more. >> >> Best of luck and enjoy your bike. >> >> Sean >> >> >> >> On Monday, December 10, 2012 1:02:45 AM UTC-10, surfswab wrote: >> First suggestion, buy a service manual. Clymer's a good one. >> >> Second, fewer than 40 mpg in constant stop/go traffic is fairly >> normal, but almost half that is not. >> >> Sounds like the engine is running rich. Are you mindful of turning >> choke off after warmup? If so, problem may be deeper. Try pulling >> the spark plugs and inspecting them. If they are sooty black or wet >> with gas that would confirm a rich mixture and might indicate a need >> for air/fuel mixture adjustment. >> >> Also check the choke cable for proper adjustment. Follow the cable >> visually from the handlebars to the connection at the left side of the >> motor. A two-finger fork style fitting at the end of the cable >> operates brass pins built into the tops of the carbs. >> >> With the engine off, move your choke lever from full on to full off >> and observe the operation of those pins (you'll probly be able to see >> only one of them. The rest are connected by a rod across all four >> carbs). If the choke is operating correctly, the brass pins should >> almost disappear into the carb bodies when you turn the choke off. >> With the choke full on, you should see about a quarter-inch of brass. >> Use your new service manual for adjustment procedures if needed. >> >> I'd suggest new plugs in addition to a new air filter and oil change >> as already mentioned. Sniff the oil to make sure there's no gas smell >> coming from it. And empty blowby gases/water from the clear plastic >> tube hanging down from the frame, under your right foot peg (it has a >> plastic plug in the end) >> >> Balancing the carbs wouldn't hurt either (service manual, again, for a >> description of the procedure). >> >> The motor was designed to run on regular gas, so switching to higher >> octane would have no affect unless it's pinging or dieseling. >> >> Before you put a wrench to it, though, try a weekend 100-150 mile, >> open road (non-stop/go) run to see if you're mileage figures improve. >> Should be in the low-mid 40s -- more, if you ride sedately, less if >> you don't. >> >> >> >> On Dec 9, 6:07 pm, Sanna <[email protected]> wrote: >> > Hello >> > >> > Bought a 2000 NightHawk 750 3 months back. Been using to commute to work >> > about 15 Miles both ways, stop and go City traffic. Noticied I am getting >> > about 22-26 Miles a gallon. Switched to 93 Premium grade gas, almost same >> > thing. Please advise. I was hoping to get about 40 miles per gallon in >> > the >> > City. I want to go for long rides / cross country during Summer. >> > >> > Your suggestions and advise is very much appreciated. Thank you. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. >> >> > > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. > > > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US.
