Bills tips
http://www.pilotodyssey.com/billtips.htm
Subject: FL250 Maintenance Tips: Updated 6/12/2000
I will soon check the Clymer corrections against the factory Honda manual when I have time.
That way I can correct any mistakes that are in that manual as well.
I have noticed various mistakes in the Clymer FL250 manual. I have addressed the mistakes here:
I have the fourth edition of this manual. If you don't, page #'s might not be the same.
Here are the changes:
P.61
Manual says to remove the crankshaft seals before removing the crankshaft main bearings
(during bearing replacement). This is wrong. On an FL250 the crankshaft bearing must be removed
first, then the seals. Also: seals must be installed before the bearings during reinstallation. Also:
If you put the bearings in the freezer for a while before installation they will contract (shrink)
a little due to the cold. This will make bearing installation a little easier.
P.98
Make a note on the jetting correction factor chart that the stock FL250 28mm carb has a 120 main
jet from the factory. Any flow mods will probably require a larger main jet to keep EGT within
desirable range depending on air temp/altitude/fuel mixture etc.
P.126
States that the limit on the lower steering shaft bushing is 0.8165
this is wrong. The measurement should be 0.7165
P.191
1977-1979 ignition schematic
6 volt AC points ignition system
35 watt 6 volt AC headlight.
The ignition switch is open (no continuity) when magneto is on.
The switch is closed when magneto is off (has continuity)
Along the trail of the wires for the wiring harness/schematic, the arrow represents a male connector
and the block represents a female connector.
P.192
1980 only ignition
12 volt AC points ignition system
45 watt 12 volt AC headlight.
The ignition switch is open (no continuity) when magneto is on.
The switch is closed when magneto is off (has continuity)
Along the trail of the wires for the wiring harness/schematic, the arrow represents a male connector
and the block represents a female connector.
P.193
1981-1984 CDI ignition (hands down the best factory system built for an FL250)
12 volt AC Capacitor Discharge Ignition. (no points)
60 watt headlight 12 volt AC
3 watt tail light 12 volt AC
The ignition switch is open (no continuity) when magneto is on.
The switch is closed when magneto is off (has continuity)
Along the trail of the wires for the wiring harness/schematic, the arrow represents a male connector
and the block represents a female connector.
Where it shows the alternator (bottom center of the page, landscape view)
The coil shown in the center is the pulse coil.
The coil on the right that goes up to the CDI box is the exciter coil (wire is labeled Bk/R)
The coil on the left is the lighting coil (wire labeled Y).
!!!********VERY IMPORTANT:*********!!!
Applies to 81-84 CDI ignition systems only:
***This particular thing has confused me more than once.
Read the color codes / abbreviations listed in the manual.
The wire going from the CDI box to the spark plug coil labeled B/Y is some times black with a yellow
stripe & sometimes blue with a yellow stripe.
The wire labeled Bk/Y going from the CDI box to the right side of the pulse coil is some times black
with a yellow stripe & sometimes blue with a yellow stripe.
They will almost always be one or the other (the two different wires will not be the same color/stripe),
but I have encountered odysseys that had the same color/stripe wires for both.
I have encountered odysseys that someone previous to me has hacked up the wiring harness, wired it wrong,
& the car would not run. I attribute this to them following the uncorrected maintenance manual without having
the joy & benefit of experiencing this before.
DO NOT hook it up the wrong way. This invites an opportunity to damage the CDI box & other components.
Check your machine & figure it out. Make a note of what it is. This can confuse if you are having an ignition
problem & trying to trouble shoot it.
!!!*********END OF VERY IMPORTANT:*********!!!
The last page in the Clymer FL250 Manual is for notes.
The following is good information to add there:
Ignition Tips:
Let there be no doubt that your FL250 Odyssey puts out 12 volt AC power, not DC. You can verify this by
placing a multimeter on your yellow wire(power lead for the lights) coming from the stator while the engine
is running. If you try to use AC to charge a 12 volt battery it will eventually damage the DC battery.
The stock ignition rotating magnet-flywheel puller (fits all year FL250's, & also fits FL350 flywheels) can
be ordered from Dennis Kirk part # 28-282 for $18.99
Ricky Stator now rewinds the ignition coils for your FL250 stator plate. If you have a stator plate that is
bad, he can repair it.
I don't care for the original FL250 Odyssey points style ignition systems. I have found them to be unreliable.
Any money wasted buying tune up kits with points and condenser would be better spent towards buying a
reliable 12 Volt CDI system for your odyssey.
This trick that will enable you to do a quick check of your ignition system without any tools at all. Materials
needed: You need a spark plug hole rethreading tap from the auto parts store ($7) and a 9/16 - 18 thread
pitch standard or jam nut from the hardware store that the tap fits tightly into when you try to start it ($0.50).
Don't buy a grade 8 nut. Buy the lowest quality nut that you can find, preferably grade 2 or pot metal. The grade 8
nuts are very hard on your tap. Procedure: Run the spark plug hole rethreading tap through the hardware store nut
several times. Then try threading a spark plug through the freshly retapped nut. If the spark plug will thread through
the nut easily, the nut is ready to install. Sand off a clean spot on the roll cage near the cylinder head and spark
plug lead. Then weld the nut to the chassis. If you can't weld, get someone to weld it for you. Any muffler shop
($10 max). Then run the tap back through the nut after it after it cools. OK then kit is installed. Paint welded area
to match roll cage. Now install a new spark plug into the nut you just welded to the roll cage. Any time your Odyssey
won't start just pull the spark plug lead from the plug on the cylinder head & install it on the plug on the roll cage.
If it doesn't spark when you pull the starter, you know the ignition system is not firing. This can often reduce
trouble shooting time, and you are not trying to pull the start cord while grounding the spark plug by holding it
against the cylinder head. The added bonus is you always have a spare plug handy. This tip also works for Pilots
& FL350's.
If you replace your factory spark plug boot, replace it with an NGK boot. These boots install on your factory spark
plug lead easily. They feature a positive locking device that uses splines to lock the boot onto the spark plug. It will
ensure a positive connection between the spark plug lead and the spark plug and will ensure
that the boot will not fall off during riding. (I have seen old worn out boots that would actually fall off while
riding. This tip also works for Pilots & FL350's.