Difference between revisions of "Yamaha YZ490"

**Yamaha YZ490**
	Yamaha YZ490
Manufacturer	Yamaha
Also called	YZ 490
Production	1987
Class	All
Engine	single cylinder, two-stroke
Top Speed	88 mph
Horsepower	53.77 HP (40.1 KW) @ 7000RPM
Fuel System	carburetor
Transmission	Gear box: 5-speed ; Final Drive: chain ; Clutch: wet plate ;
Brakes	Front: single disc ; Rear: expanding brake (drum brake)
Weight	235.89 pounds (107.0 Kg) (dry),
Recommended Oil	Yamalube 10w-40
Manuals	Service Manual

**Yamaha YZ490**
	Yamaha YZ490
Manufacturer	Yamaha
Production	82-90
Class	Motorcross
Predecessor	Yamaha YZ465
Engine	490
Top Speed	88 mph
Spark Plug	NGK B9EG '82 , '83-85 , '86-87; NGK B8EG '88-90
Front Tire	3.00-21 '82; 80/100-21 '86-87 , '88-90; 100/90-21 '83-85
Rear Tire	140/80-18 '83-85; 110/100-18 '88-90; 140/90-18 '82; 80/100-18 '86-87
Weight
Recommended Oil	Yamalube 10w-40
Related	Yamaha IT490
Manuals	Service Manual

Latest revision as of 20:05, 23 November 2019

The Yamaha YZ490 is a motorcycle produced by Yamaha from 1982 to 1990.

Yamaha introduced the YZ 490 in 1982, after a solid run with the YZ465.

Problems[edit | edit source]

Sadly, the 490 was heavier than the 465, nowhere near as reliable, horribly difficult to start (hot or cold), came with a grim suspension, vibrated enough to bring blisters to your hands and was impossible to jet.

If you jetted it rich enough to keep this dog from seizing, it would blubber, puke, foul plugs and produce no power. If you jetted it to run strong, it would invariably seize. It came with air leaks, a wandering ignition, gimpy motor mounts and the worst case of Yamahop at high speeds since the original DT-1. Yamaha issued a mountain of service bulletins to try to fix the problems. None of them worked.

1982[edit | edit source]

1982 Yamaha YZ490J in Yellow
1982 Yamaha YZ490J in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow

1983[edit | edit source]

1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow

1984[edit | edit source]

1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow

1985[edit | edit source]

1985 Yamaha YZ490 in White/Red
1985 Yamaha YZ490 in White/Red
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White

Engine[edit | edit source]

The engine was a air cooled single cylinder, two-stroke.

Drive[edit | edit source]

The bike has a 5-speed transmission. Power was moderated via the wet plate.

Chassis[edit | edit source]

Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The bike weighed just 235.89 pounds (107.0 Kg).

In Media[edit | edit source]

References[edit | edit source]

@@ Line 1: / Line 1: @@
+{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}}
+{{Motorcycle
+|name             = Yamaha YZ490
+|photo= 1982-Yamaha-YZ490J-Yellow-0.jpg
+|aka              =
+|manufacturer     = Yamaha
+|parent_company   =
+|production       = 82-90
+|model_year       =
+|predecessor      = [[Yamaha YZ465]]
+|successor        =
+|class            =Motorcross
+|engine           = 490
+|bore_stroke      =
+|compression      =
+|top_speed        =88 mph
+|power            =
+|torque           =
+|ignition         =
+|spark_plug       = {{sparkplug|NGK B9EG}} '82 , '83-85 , '86-87<br />{{sparkplug|NGK B8EG}} '88-90
+|battery          =
+|transmission     =
+|frame            =
+|suspension       =
+|brakes           =
+|front_tire       = {{tire|3.00-21}} '82<br />{{tire|80/100-21}} '86-87 , '88-90<br />{{tire|100/90-21}} '83-85
+|rear_tire   	  = {{tire|140/80-18}} '83-85<br />{{tire|110/100-18}} '88-90<br />{{tire|140/90-18}} '82<br />{{tire|80/100-18}} '86-87
+|rake_trail       =
+|wheelbase        =
+|length           =
+|width            =
+|height           =
+|seat_height      =
+|dry_weight       =
+|wet_weight       =
+|fuel_capacity    =
+|oil_capacity     =
+|recommended_oil= Yamalube 10w-40
+|fuel_consumption =
+|turning_radius   =
+|related          = [[Yamaha IT490]]
+|competition      =
+}}
+The '''Yamaha YZ490''' is a [[motorcycle]] produced by [[Yamaha]] from 1982 to 1990.
+[[Yamaha]] introduced the '''YZ 490''' in 1982, after a solid run with the [[YZ465]].
+==Problems==
+Sadly, the 490 was heavier than the 465, nowhere near as reliable, horribly difficult to start (hot or cold), came with a grim suspension, vibrated enough to bring blisters to your hands and was impossible to jet.
+If you jetted it rich enough to keep this dog from seizing, it would blubber, puke, foul plugs and produce no power. If you jetted it to run strong, it would invariably seize. It came with air leaks, a wandering ignition, gimpy motor mounts and the worst case of Yamahop at high speeds since the original [[Yamaha DT1|DT-1]]. Yamaha issued a mountain of service bulletins to try to fix the problems. None of them worked.
 ==1982==
-[[Image:1982-Yamaha-YZ490J-Yellow-0.jpg|left|thumb|1982 Yamaha YZ490J in Yellow]][[Image:1982-Yamaha-YZ490J-Yellow-1.jpg|left|thumb|1982 Yamaha YZ490J in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-0.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-1.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-2.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-3.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-4.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-1228-5.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-2991-0.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-2991-1.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-2991-2.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-2991-3.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]][[Image:1982-Yamaha-YZ490-Yellow-2991-4.jpg|left|thumb|1982 Yamaha YZ490 in Yellow]]
+<gallery mode="packed-hover">
-<br style="clear: left"/>
+File:1982-Yamaha-YZ490J-Yellow-0.jpg|left|thumb|1982 Yamaha YZ490J in Yellow
+File:1982-Yamaha-YZ490J-Yellow-1.jpg|left|thumb|1982 Yamaha YZ490J in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-0.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-1.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-2.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-3.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-4.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-1228-5.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-2991-0.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-2991-1.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-2991-2.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-2991-3.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+File:1982-Yamaha-YZ490-Yellow-2991-4.jpg|left|thumb|1982 Yamaha YZ490 in Yellow
+</gallery>
 ==1983==
-[[Image:1983-Yamaha-YZ490K-Yellow-4676-0.jpg|left|thumb|1983 Yamaha YZ490K in Yellow]][[Image:1983-Yamaha-YZ490K-Yellow-4676-1.jpg|left|thumb|1983 Yamaha YZ490K in Yellow]][[Image:1983-Yamaha-YZ490K-Yellow-4676-2.jpg|left|thumb|1983 Yamaha YZ490K in Yellow]][[Image:1983-Yamaha-YZ490K-Yellow-4676-3.jpg|left|thumb|1983 Yamaha YZ490K in Yellow]][[Image:1983-Yamaha-YZ490K-Yellow-4676-4.jpg|left|thumb|1983 Yamaha YZ490K in Yellow]]
+<gallery mode="packed-hover">
+File:1983-Yamaha-YZ490K-Yellow-4676-0.jpg|left|thumb|1983 Yamaha YZ490K in Yellow
+File:1983-Yamaha-YZ490K-Yellow-4676-1.jpg|left|thumb|1983 Yamaha YZ490K in Yellow
+File:1983-Yamaha-YZ490K-Yellow-4676-2.jpg|left|thumb|1983 Yamaha YZ490K in Yellow
+File:1983-Yamaha-YZ490K-Yellow-4676-3.jpg|left|thumb|1983 Yamaha YZ490K in Yellow
+File:1983-Yamaha-YZ490K-Yellow-4676-4.jpg|left|thumb|1983 Yamaha YZ490K in Yellow
+</gallery>
 <br style="clear: left"/>
 ==1984==
-[[Image:1984-Yamaha-YZ490-Yellow-3058-0.jpg|left|thumb|1984 Yamaha YZ490 in Yellow]][[Image:1984-Yamaha-YZ490-Yellow-3058-1.jpg|left|thumb|1984 Yamaha YZ490 in Yellow]][[Image:1984-Yamaha-YZ490-Yellow-3058-2.jpg|left|thumb|1984 Yamaha YZ490 in Yellow]]
+<gallery mode="slideshow">
-<br style="clear: left"/>
+File:1984-Yamaha-YZ490-Yellow-3058-0.jpg|left|thumb|1984 Yamaha YZ490 in Yellow
+File:1984-Yamaha-YZ490-Yellow-3058-1.jpg|left|thumb|1984 Yamaha YZ490 in Yellow
+File:1984-Yamaha-YZ490-Yellow-3058-2.jpg|left|thumb|1984 Yamaha YZ490 in Yellow
+</gallery>
 ==1985==
-[[Image:1985-Yamaha-YZ490-White-Red-7197-0.jpg|left|thumb|1985 Yamaha YZ490 in White/Red]][[Image:1985-Yamaha-YZ490-White-Red-7197-1.jpg|left|thumb|1985 Yamaha YZ490 in White/Red]]
+<gallery mode="packed-hover">
-<br style="clear: left"/>
+File:1985-Yamaha-YZ490-White-Red-7197-0.jpg|left|thumb|1985 Yamaha YZ490 in White/Red
+File:1985-Yamaha-YZ490-White-Red-7197-1.jpg|left|thumb|1985 Yamaha YZ490 in White/Red
+File:1985-Yamaha-YZ490-White-4497-0.jpg|left|thumb|1985 Yamaha YZ490 in White
+File:1985-Yamaha-YZ490-White-4497-1.jpg|left|thumb|1985 Yamaha YZ490 in White
+File:1985-Yamaha-YZ490-White-4497-2.jpg|left|thumb|1985 Yamaha YZ490 in White
+File:1985-Yamaha-YZ490-White-4497-3.jpg|left|thumb|1985 Yamaha YZ490 in White
+File:1985-Yamaha-YZ490-White-4497-4.jpg|left|thumb|1985 Yamaha YZ490 in White
+</gallery>
 ==See Also==
@@ Line 23: / Line 109: @@
 *[[Yamaha YZ250]]
 *[[Yamaha YZ400]]
+{{template:Yamaha YZ}}
+{{Yamaha}}
 [[Category:Yamaha motorcycles|YZ490]]
+[[Category:Yamaha YZ series]]
+{{Motorcycle
+|name             = Yamaha YZ490
+|aka              = YZ 490
+|manufacturer     = Yamaha
+|parent_company   =
+|production       = 1987
+|model_year       =
+|predecessor      =
+|successor        =
+|class            = All
+|engine           = single cylinder, two-stroke
+|bore_stroke      =
+|compression      =
+|top_speed        =88 mph
+|power            = 53.77 HP (40.1 KW) @ 7000RPM
+|torque           =
+|fuel_system      = carburetor
+|ignition         =
+|spark_plug       =
+|battery          =
+|transmission     = Gear box: 5-speed <br>
+Final Drive: [[chain]] <br>
+Clutch: wet plate <br>
+|frame            =
+|suspension       =
+|brakes           =Front: single disc <br>Rear: expanding [[brake]] (drum brake)
+|front_tire       =
+|rear_tire   	  =
+|rake_trail       =
+|wheelbase        =
+|length           =
+|width            =
+|height           =
+|seat_height      =
+|dry_weight       = 235.89 pounds (107.0 Kg)
+|wet_weight       =
+|fuel_capacity    =
+|oil_capacity     =
+|recommended_oil=Yamalube 10w-40
+|fuel_consumption =
+|turning_radius   =
+|related          =
+|competition      =
+}}
+The '''[[Yamaha]] YZ490''' was a single cylinder, two-stroke All [[motorcycle]] produced by [[Yamaha]] in 1987. Claimed [[horsepower]] was 53.77 HP (40.1 KW) @ 7000 RPM.
+==Engine==
+The engine was a [[air cooled]] single cylinder, two-stroke.
+==Drive==
+The bike has a 5-speed transmission. Power was moderated via the wet plate.
+==Chassis==
+Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The bike weighed just 235.89 pounds (107.0 Kg).
+==In Media==
+* [https://motopixel.org/pixel/cyborg-3-the-recycler#yamaha-yz490 Cyborg 3: The Recycler]
+* [https://motopixel.org/pixel/the-dukes-of-hazzard#yamaha-yz490 The Dukes of Hazzard]
+==References==
+{{reflist}}
+[[Category:All motorcycles]]
+[[Category:Yamaha motorcycles]]
+[[Category:1980s motorcycles]]
+[[Category:Multiple Infoboxes]]