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Thursday, April 14, 2016

Yamaha Grizzly 700 Off-Road Trail Review: 2007-2008-Everything ATV UTV Reviews

Hang On!  We just finished our test of a 2007 Grizzly 700.  Back in the year this quad debuted power steering on a ATV was a new concept and Yamaha pioneered a system that just plain worked.  The 700 engine began phasing out the older 660 Grizzly engine, offered more displacement and the addition of fuel injection.

The 2007-2008 Grizzly 700 models are identical and minor system updates continued through 2015 until the release of the new Grizzly 700 in 2016.  During our test we found the 2007 Grizzly 700 to be a solid performer, even years after it's launch.  We pushed the Grizzly hard throughout our test and it performed better than some of the newer larger makes and models we've recently tested.

The 700 Grizzly stands out in the following areas.
 - Overall Comfort
- Suspension
- Belt Drive (Ultramatic)

Comfort is a area that encompasses many good characteristics on Grizzly 700.  When you first sit down on the Grizzly we noticed the seat is memory foam soft, much like the Polaris quads.  The handlebars sit up nice and tall, myself at more than six foot tall, I was able to sit upright, not leaned forward.  The power steering on the Grizzly 700 is just awesome, easy to steer and no harsh feed back through the handlebars in the rough stuff.

The Independent Suspension on the Grizzly 700 is plush and at the same time just stiff enough to allow for more advanced riders to get technical.  The arching a-arms allow for massive ground clearance and moderate jumps are soaked up effortlessly by the long travel.  Similar to the 750 King Quad, the harder you push the Grizzly the smoother and more predictable it gets.

The Ultramatic fully automatic CVT belt driven transmission is electric smooth.  A big factor in the smooth delivery is a wet clutch setup that engages the primary clutch.  Engine braking is near perfection, is not overly felt when slowing down, but you can tell it's there without throwing you forward.

Another notable mention is the Grizzly 700 engine.  The engine is a single cylinder and puts out good strong power, especially once you get it moving.  It really pulled strong once we got it moving, but lacks the punch of a twin cylinder from a dead stop.  We found it pulled through the power band quicker than some of the other single cylinder big bore quads, but was not as smooth running.  With more than a 5 gallon fuel capacity the Grizzly 700 will get much better fuel mileage on a single fill up versus the twins cylinders.

Over-all the 700 Grizzly is a major contender in the used big bore market and they appear to hold their value better than some of the competition.   Below is the specs for the 2007-2008 Grizzly 700 and Everything ATV UTV Reviews test video:


Engine Type  Single-Cylinder
Cylinders  1
Engine Stroke  4-Stroke
Cooling  Liquid / Air
Valves  4
Valves Per Cylinder  4
Valve Configuration  SOHC
Bore (mm/in)  102 / 4.02
Stroke (mm/in)  84 / 3.31
Displacement (cc/ci)  686 / 41.9
Compression Ratio  9.2:1
Starter  Electric
Fuel Requirements  Regular
Fuel Type  Gas
Carburetion Brand  Mikuni
Fuel Injector  Yes
Fuel Injector Size (mm)  44
Carburetor  No
Carburetion Type  Fuel Injected
Speed Governor  No
Transmission:  
Transmission Type  Continuously Variable (CVT)
Primary Drive (Front Wheel)  Shaft
Primary Drive (Engine / Transmission)  Belt
Reverse  Yes
Transmission Brand  UltraMatic™
Hi / Low Range  Yes
Wheels & Tires:  
Wheels Composition  Aluminum
Front Tire Diameter (in)  25
Rear Tire Diameter (in)  25
Chromed  No
Tire Brand  Dunlop®
Front Tire Width  8
Front Wheel Diameter  12
Rear Tire Width  10
Rear Wheel Diameter  12
Front Tire (Full Spec)  Dunlop® AT25 x 8 - 12
Rear Tire (Full Spec)  Dunlop® AT25 x 10 - 12
Brakes:  
Front Brake Type  Dual Hydraulic Disc
Rear Brake Type  Dual Hydraulic Disc
Engine Braking  Standard
Suspension:  
Front Suspension Type  Independent Double Wishbone
Front Travel (in/mm)  7.1 / 180.3
Front Adjustable Fork Pre-Load  Yes
Front Adjustable Rebound Damping  No
Front Central Suspension Strut  No
Steering Damper  No
Front Stabilizer Bar  No
Rear Suspension Type  Independent Double Wishbone
Rear Travel (in/mm)  9.5 / 241.3
Rear Adjustable Shock / Spring Pre-Load  Yes
Rear Adjustable Rebound Damping  No
Number Rear Shock Absorbers  2
Rear Suspension Material  Steel
Rear Stabilizer Bar  No
Air Adjustable  No
Steering:  
Steering Type  Manual
Steering Control  Handlebar
Technical Specifications:  
Length (ft)  6.78
Width (in/mm)  46.5 / 1181.1
Height (in/mm)  48.8 / 1239.5
Wheelbase (in/mm)  49.2 / 1249.7
Turning Radius (ft)  10.5
Ground Clearance (in/mm)  11.8 / 299.7
Length (ft/ft)  6
Length (ft/in)  9
Dry Weight (lbs/kg)  600 / 272.2
Towing Capacity (lbs/kgs)  1212 / 549.8
Fuel Capacity (gal/l)  5.3 / 20.1
Engine Displacement to Weight (cc)  1.14
Seats:  
Seat Type  One-Piece
Adjustable  No
Seat Material  Vinyl
Seat Location  Driver
Folding  No
Seat Height (in/mm)  35.6 / 904.2
Number Of Seats  1
Exterior:  
Frame  Steel
Body Material  Plastic
Floor Board Location  Driver
Hand Grips  Standard
Foot Peg Location  Driver
Brush Guard  Yes
Radiator Guard  No
CV Boot Cover  Yes
Front Fender  Standard
Rear Fender  Standard
Handlebars  Standard
Front Bumper  Standard
Bash Plate (Front/Rear)  Yes / Yes
Full Length Skid Plate  Yes
Instrumentation:  
Digital Instrumentation  Standard
Clock  Standard
Trip Odometer  Standard
Speedometer  Standard
Hour Meter  Standard
Temperature Warning Type  Light
Fuel Level Warning Type  Gauge

Monday, April 11, 2016

Grizzly 700 Shim Mod Install and Drive Belt Change for More Low End Power and Faster Hole Shots!

Performing the shim mod on a Grizzly 700 Ultramatic transmission is one of the easiest ways to gain a considerable amount of more bottom end power.  The modification is also affordable, because the shim will only cost you a couple dollars and some install time.  In this article I'll explain the advantages, disadvantages and how to do it.

The advantages to the shim modification include: inexpensive, requires only basic tools and mechanic skills to install and provides the Grizzly with a lower gear ratio.  The modification works by allowing the drive belt to seat further down into the primary clutch sheaves.  This modification can be done at any time and is reversible.  The best time to complete the shim modification would be when replacing the drive belt since it requires basically the same procedure.

Disadvantages to the shim mod include: lower overall top end speed and shorter drive belt life.  Essentially all the low end grunt this modification produces equally reduces the Grizzly's over-all top speed.  You'll likely get less mileage out of your belt because the shim spreads the primary sheaves and has less distance before it bottoms out on the collar between the sheaves.

This video will show you how to install the shim modification during a drive belt change.