SECTION I

INTRODUCTION AND DESCRIPTION

1-1 INTRODUCTION

We are pleased to have you as a Bush Hog cus- tomer. Your 305/306 Series Rotary Cutter has been carefully designed to give maximum service with minimum down time. This manual is provided to give you the necessary operating and maintenance instructions for keeping your rotary cutter in top operating condition. Please read this manual thor- oughly. Understand what each control is for and how to use it. Observe all safety precautions decaled on the machine and noted throughout the manual for safe operation of implement. If any assistance or additional information is needed, con- tact your authorized Bush Hog dealer.

 

Figure 1-1 Major Components

 

 

 

 

 

 

 

 

 

A-Frame

 

 

 

 

Support Yoke

 

 

Tailwheel

Strut

 

 

 

 

 

 

 

 

 

 

 

Gearbox

 

 

1-2 DESCRIPTION

 

 

Driveline

 

 

 

 

 

 

 

 

 

 

The 305/306 Series rotary cutters (Figure

1-1)

are

 

 

 

 

 

 

 

 

 

 

 

 

 

Hitch Pin

 

 

 

 

Strongback

 

 

 

designed for medium duty applications

such as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Skid

 

 

 

 

 

grass, corn stalks and light brush. These cutters are

 

 

 

 

 

 

 

 

 

 

 

Chains

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

single spindle with two free-swinging blades. Free-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

swinging blades reduce the shock of impact when a

 

 

 

 

 

 

 

 

 

 

 

 

stationary object is hit. Additional protection is pro-

 

 

 

 

 

 

 

 

 

 

 

 

vided by a slip clutch on the gearbox input

shaft.

A

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE:

Dealer or

purchaser may elect to delete

 

round blade holder allows the cutter to “ride over”

 

front and rear discharge shields (deflectors) at their

 

stumps and similar immovable objects. Models 305

 

 

option.

Refer to “WARNING” in Section 3-3.

 

and 306 are attached to the tractor using a standard

 

 

 

 

 

 

NOTE

 

Cat. I, II, or III 3-point hitches and can use Cat. II

 

All references made to right, left, front, rear, top or

 

and III quick hitch. Standard equipment includes dri-

 

bottom are as viewed facing the direction of forward

 

veline shields, clutch shields and front discharge

 

travel with implement properly attached to tractor.

 

shields (deflectors).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 1 Technical Specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIES

 

 

305

 

 

 

306

 

 

 

 

 

Cutting Width

 

 

 

60”

 

 

 

 

 

72”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transport Width

 

 

 

65”

 

 

 

 

 

79”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Length

 

 

 

101”

 

 

 

 

 

113”

 

Hitch

 

 

 

3-Point Cat. I, Cat II and Cat. II

 

 

 

 

 

 

and Cat. II & III Quick Hitch

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutting Height

 

 

2” - 12”

 

 

 

2” - 12”

 

Cutting Capacity

 

 

3” Diameter

 

 

 

 

3” Diameter

 

 

 

 

 

 

 

 

 

 

 

 

 

Driveshaft

 

 

ASAE Category 4 or 5

 

ASAE Category 4 or 5

 

Gearbox

 

 

540 RPM (80 HP)

 

540 RPM (90 HP)

 

 

 

 

 

 

 

 

 

 

 

 

 

Blades

 

 

1/2” x 4” Uplift

 

 

1/2” x 4” Uplift

 

Blade Tip Speed

 

 

12,193 fpm

 

 

14,632 fpm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blade Holder

 

 

Round

 

 

 

 

Round

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Top Deck

 

 

7 Ga. Steel

 

 

 

 

7 Ga. Steel

 

Side Bands

 

 

1/4” x 7”

 

 

 

1/4” x 7”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum Tractor HP

 

 

30

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Front & Rear Deflectors

 

 

Front chains are standard, rear chains are optional

 

Wheels

 

 

Laminated

 

 

 

 

Laminated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Approximate Weight (lbs.)

 

 

825 lbs.

1

 

 

 

 

1078 lbs. 1

 

 

 

 

 

 

 

 

 

 

 

 

 

1 - Weight includes deflector chains front and standard 3-point hitch.

 

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

 

 

 

 

 

 

 

6

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Bush Hog 305, 306 manual Section Introduction and Description, Series