Honda CRF250F
November 8, 2020 version
|
Introduction |
Modifications |
Documents |
Fuel Injection |
Break In |
|
|
Honda CRF250F
|
Click pictures to supersize.
ALERT February 1, 2019
foytix spotted these brand-new, still-in-the-crate, 2019 CRF250F twins at a NC dealer receiving area where he works.
Thanks for the heads-up and picture.
I did some spot checking, and the 250F is in stock on the west coast, Colorado, and the mid-west, plus many places in Canada. GO GET EM!
On ThumperTalk - CRF250f came in at work today.
ALERT February 12, 2019
I called APEX in Colorado Springs this morning, and asked about the CRF250F. They said one was already sold and picked up, and they had one on the floor. I drove down and had a look-see.
It fits me just fine....
Don't mind those bikes in the background cluttering up the shot.
They have 2 more in a crate - better get down there.
No, I didn't buy it; I'm sittin on the fence for now.
Three days later -
Oops, I did it again.
I'm takin you home!
Stay tuned. It needs a mod or two to give it my 'special' look. Heh Heh Heh.
Honda announced the new 2019 CRF250F in early November, 2018. Details on the Honda CRF250F web page. and Features and Benefits
Let's have a look at this new beauty...
The Brazilian home model has a headlight, and a small instrument panel hidden behind it. After reviewing several Brazil-made videos, I have determined that the small instrument panel behind the headlight is the same as the US model, and there is no headlight switch here. Perhaps they have wired the headlight to a point in the wiring that is live when the engine is running, and have no need for a headlight switch. NOTE - no taillight/brake light.
ThumperTalk inmate 'tatau' from Brazil posted a very informative video on ThumperTalk where he showed the 250F completely disassembled. He showed the cylinder head and cam and discussed various features. CRF250F how its made
Some of his comments:
"Rear shock is locked like in the 230. I had to drill it to remove nitro and then disassemble it. But the internal valve and shims stack is much better than 230."
"Head gasket is multiple layered steel."
"Dog bone not aluminum, only the swingarm is."
"250F steel chassis is 5.3 lbs heavier than 230 chassis.
250F engine is 6.6 lbs heavier than 230 engine.
I was surprised to find out 250F steel gas tank (without gas pump) is 1.1 lighter than 230 plastic tank."
Other ThumperTalk threads:
2019 Crf250f new model!! facts on the new CRF250f
ADVrider thread:
New, FI, Air Cooled Honda CRF250F
MUST WATCH video of Race in Brazil:
CRF250F wins the 5th Challenge Take Off driver Rodrigo Cavalini
My CRF250F YouTube videos:
CRF250F on Rainbow Trail
CRF250F Aspen Tunnel - Spring
BigBore Options
Do you understand Portuguese?
https://www.youtube.com/watch?v=wTZtKjg5z6o
CRF 250F Melhorias de performance / Cilindrada / Comando / Cabeçote
(CRF 250F Performance improvements / Displacement / Control / Head)
Heads Up from FredR: There is a setting on youtube to turn on closed captioning which you can then select to translate into English.
So, click the CC box for closed captioning, then select the language in the 'wheel' pull-down right next to the CC box.
The Service Manual is available from Helm, inc.
It came today 2018/12/18.
Standard high-quality Honda manual.
Selected pages are at Honda CRF250F - Documents
CRF250F parts are available online:
Apex Sports
Discount Honda Parts
Honda Parts House
PartsFish
PartsPitStop
Partzilla
Rocky Mountain ATV/MC
Ron Ayers
Service Honda
I was browsing through the parts list and found a few eye openers!!!!
$40 spark plug $400 fuel tank Over $900 for FI gizmos
Comparo - CRF250F vs CRF230F
|
CRF250F 2019 (from Honda web page and Honda Service Manual) |
CRF230F (from Honda Service Manual) |
|
| Engine | 249cc air-cooled single-cylinder four-stroke | 223cc air-cooled single-cylinder four-stroke with electric starting |
| Bore and stroke | 71.0 x 63.0mm | 65.5 x 66.2mm |
| Compression ratio | 9.6:1 | 9.0:1 |
| Valve Train | SOHC; four-valve | SOHC; two-valve |
| Cam | Intake opens at 1mm lift 0° BTDC Intake closes at 1mm lift 35° ABDC Exhaust opens at 1mm lift 40° BBDC Exhaust closes at 1mm lift -5° ATDC |
Intake opens at 1mm lift 10° BTDC Intake closes at 1mm lift 40° ABDC Exhaust opens at 1mm lift 35° BBDC Exhaust closes at 1mm lift 10° ATDC |
| Engine dry weight | 73.0 lbs | 68.8 lbs |
| Air filter | Oiled polyurethane foam | Oiled polyurethane foam |
| Induction | Fuel-injection, 34mm throttle bore; bank angle sensor assembly | Carburetor, 28mm piston-valve, 42 pilot, 102 main |
| Transmission | 5-speeds, primary reduction 2.863 (63/22) | 6-speeds, primary reduction 3.090 (68/22) |
| 1st thru top ratios | 2.846 1.900 1.400 1.083 0.897 | 2.769 1.941 1.450 1.148 0.960 0.812 |
| 1st thru top internal gears | 37/13 38/20 28/20 26/24 26/29 | 36/13 33/17 29/20 31/27 24/25 26/32 |
| Final drive | #520 O-ring sealed chain, 13/50T (3.846) | #520 O-ring sealed chain, 13/50T (3.846) |
| Starting system | Electric starter motor | Electric starter motor |
| Battery | Yuasa YTZ7S | Yuasa YTX5L-BS |
| Ignition | Full Transistorized | CDI solid-state digital |
| Charging system | Single phase output alternator | Single phase output alternator |
| Alternator capacity | 0.209 kW / 5,000 rpm aka 209 W / 5,000 rpm | 60 W / 5,000 rpm |
| Regulator/rectifier | SCR shorted single phase, half-wave rectification | SCR shorted single phase, half-wave rectification |
| Spark plug and gap | NGK LMAR7H-9DS .8 - .9mm (.03 - .04") gap | NGK DPR8EA-9 .8 - .9mm (.03 - .04") gap |
| Front suspension | 41mm telescopic fork; 8.5" travel | 37mm leading-axle Showa fork, 8.5" travel |
| Rear suspension | Pro-Link Showa shock with spring-preload adjustability, 9.1" travel | Pro-Link Showa shock with spring-preload adjustability, 9.1" travel |
| Front brake | Single 240mm disc | Single 240mm disc |
| Rear brake | Single 220mm disc | Drum |
| Front tire | 80/100-21 | 80/100-21 |
| Rear tire | 100/100-18 | 100/100-18 |
| Rake (Castor) | 26° 5´ | 26° 45´ |
| Trail | 4.0" | 4.4" |
| Wheelbase | 55.9" | 54.0" |
| Seat height | 34.8" |
34.3" - '03-'07 34.6" - after '07 |
| Ground clearance | 11.3" | 12.0" |
| Curb weight *1 | 265 lbs |
250.2 lbs - '03-'07 248.5 lbs - '08-'14 249 lbs - after '14 |
| Dry weight *2 | 248 lbs (weighed by me) | 233 lbs (weighed by me) |
| Fuel capacity *3 | 1.59 US gal / 6.0 liters 1.70 US gal / 6.45 liters with caution |
2.17 gallons, including 0.4 gallon reserve - '03-'07 1.85 gallons, including 0.34 gallon reserve - after '07 |
| Color | Red | Red |
| Emissions | Meets California Air Resources Board (CARB) and EPA off-road emissions standards. |
Meets California Air Resources Board (CARB) and EPA off-road emissions standards. |
| *1 Curb Weight - includes all standard equipment, required fluids with a full tank of fuel-ready to ride. *2 Dry Weight - includes all standard equipment, required fluids with an empty fuel tank. *3 CRF250F Owner's Manual and Service Manual show 1.59 US gal, 6.0 liters. During filling, if you burp the air out when the fuel gets up to the bleed hole in the filler tube, and continue filling until the bleed hole is covered by fuel and no further air will burp out, you can get 1.70 gal, 6.45 liter in the tank. You should look at the fuel filler cap to see how much room you need to leave so no fuel spills out as you thread the cap on. So just exactly how much is .11 gal extra worth? At about 60 MPG, that's about 6 miles. Wanna walk or ride that extra 6 miles? |
||
Specifications subject to change without notice or regard to customers' expectations based
on previous model years' specifications or previous specifications for this model year.
