Search found 99 matches

by mikehailwood
Sat Mar 21, 2009 7:12 pm
Forum: Technical Help
Topic: How to test for clogged exhaust?
Replies: 0
Views: 1069

How to test for clogged exhaust?

Honda Express NC50 Compression=167lbs. WOT. Head and top of piston are real clean. Port was 2/3 blocked and is now clean. I can blow air easily into one end of the exhaust and feel it come out the other end in what seems like an unrestricted manner. Is there a good way to test for a clogged exhaust?
by mikehailwood
Sun Mar 15, 2009 2:05 pm
Forum: Technical Help
Topic: 85 Spree, hard start (cold engine)
Replies: 17
Views: 6128

bystarter

I put the bystarter on the bench and measure how far the needle protrudes from the body. I then use some alligator clips to connect a battery to the bystarter leads. After a period of time the needle should move (outward) a bit. When installed, before it moves, extra gas is drawn from the smaller ch...
by mikehailwood
Sun Mar 15, 2009 1:52 pm
Forum: Technical Help
Topic: 85 Spree, hard start (cold engine)
Replies: 17
Views: 6128

carb

Yes, that's the connecting passage. Fuel needs to flow from the larger chamber through that passage to the smaller chamber where the enriching circuit picks it up. Put some gas in the larger chamber and make sure it slowly fills the smaller chamber.
by mikehailwood
Fri Mar 13, 2009 7:26 am
Forum: Technical Help
Topic: 85 Spree, hard start (cold engine)
Replies: 17
Views: 6128

by-starter

Did you bench test the bi-starter? The wall in the float bowl has a hole in it for gas to pass from the main chamber to the small chamber for the enriching circuit. Is that hole open?
by mikehailwood
Thu Mar 12, 2009 5:24 pm
Forum: Technical Help
Topic: symptoms of high compression?
Replies: 4
Views: 1446

compression?

I have not yet had the opportunity to remove the head. From searches on this forum I believe that compression of 115-120 lbs is a good range for the Spree. For some reason my NQ50 manual specifies 170 lbs. Any ideas on the reason for this discrepancy?
by mikehailwood
Tue Mar 10, 2009 3:55 pm
Forum: Technical Help
Topic: symptoms of high compression?
Replies: 4
Views: 1446

symptoms of high compression?

Thanks for the quick response Wheelman. I brought this non-running scooter home about a month ago and it has led a hard life from all indications. Clean carb and a fresh battery enabled me to get it running. Since I have no history on this thing I cannot confirm the symptoms you give leading up to t...
by mikehailwood
Tue Mar 10, 2009 2:18 pm
Forum: Technical Help
Topic: symptoms of high compression?
Replies: 4
Views: 1446

symptoms of high compression?

What are the symptoms of high compression? My 1983 NC50 shows cold compression of between 150 and 165 lbs. It seriously lacks power. It revs okay on the center stand, not so well when off the centerstand and really struggles up moderate hills. Thanks, Mike
by mikehailwood
Wed Feb 18, 2009 10:14 pm
Forum: Technical Help
Topic: 1987 Aero NB50 confirmation of oil pump working?
Replies: 14
Views: 4322

carb bowl

Some Sprees, Elites and Expresses have this same walled off enriching chamber in the float bowl. All of the ones I've worked on had a straight hole. Carb cleaner followed by a tiny broach opened this passage. If I filled the small chamber with gas it would not flow into the main float bowl chamber. ...
by mikehailwood
Mon Jun 19, 2006 4:28 pm
Forum: Technical Help
Topic: 2000 Elite carb help
Replies: 7
Views: 2401

Thanks -aL-! That's perfect. I now see that this bike has a choke device similar to that of the old Sprees and the carb appears to be fairly straightforward. Thanks again.

Mike
by mikehailwood
Mon Jun 19, 2006 11:24 am
Forum: Technical Help
Topic: 2000 Elite carb help
Replies: 7
Views: 2401

I have an owner's manual but I need the shop manual or service manual level of information.

Mike
by mikehailwood
Mon Jun 19, 2006 11:22 am
Forum: Technical Help
Topic: speed variator pully
Replies: 5
Views: 2684

Does this device effect the the bottom end or the top end of the speed range?

Mike
by mikehailwood
Mon Jun 19, 2006 11:17 am
Forum: Technical Help
Topic: 2000 Elite carb help
Replies: 7
Views: 2401

Nine words. And where is this manual for the 2000 Elite?

Mike
by mikehailwood
Mon Jun 19, 2006 11:11 am
Forum: Technical Help
Topic: speed variator pully
Replies: 5
Views: 2684

speed variator pully

I was told that this 2000 Elite has had a "speed variator pully" installed. What is this?

Mike
by mikehailwood
Mon Jun 19, 2006 11:10 am
Forum: Technical Help
Topic: 2000 Elite carb help
Replies: 7
Views: 2401

2000 Elite carb help

I would like to do some work on the carb but would prefer diagrams of carb/choke before beginning. Are these available ?

Mike
by mikehailwood
Mon Apr 03, 2006 8:56 pm
Forum: Technical Help
Topic: Oil injection flow on 2000 Elite 50
Replies: 2
Views: 1357

Oil injection flow on 2000 Elite 50

2000 Elite 50. Smokes more noticably than my Spree or Yamahopper. Why? How to check the flow rate? What is the correct rate? About the same as a 50cc Spree or Aero? Is the flow rate adjustable or fixed? Any ideas appreciated. Mike