Standen POWAVATOR 400 Service manual

POWAVATOR
400
(Machines from 2005)
Standen Engineering Limited.
Hereward Works,
Station Road, Ely,
Cambridgeshire.
CB7 4BP
England.
Tel: [phone] www.standen.co.uk Fax: [phone]

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On delivery, check that the machine is as ordered and has not been damaged in transit.
Please report any shortfall or defects to your Standen dealer.
The contents of this handbook. Although correct at the time of publication, may be
subject to alteration by the manufacturers without prior notice.
Standen Engineering Limited operate a policy of continual product development.
Therefore, some illustrations and / or text within this publication may differ from your
machine.
The copyright of this handbook is the property of Standen Engineering Limited,
Hereward Works, Station Road, Ely, Cambridgeshire. CB7 4BP. This handbook is
issued on the condition that it must not be used, copied or exhibited without their
written permission. Replacement copies are available from Standen Eng. Ltd.
IMPORTANT
This operator’s handbook should be regarded as part of the machine.
Suppliers of both new and second-hand machines are advised to retain
documentary evidence that this handbook was supplied along with the
machine.
On installation of the machine (i.e. stating the machine into work), the New
Machine Installation Record Card should be completed by the dealer /
distributor and countersigned by the customer. The document is proof that
the correct procedures have been followed.
The New Machine Installation Record Card should be returned to Standen
Engineering Limited within 7 days of installation. Failure to do so may
invalidate the machine warranty.

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CONTENTS
Introduction 5
Warranty 5
Replacement parts 6
Safety
Safety precautions 7
HSE information 10
Pictorial safety signs 12
Installation
Description 13
Tractor suitability 13
Attaching the Powavator to tractor 14
Opening the machine for work 15
Removing the Powavator from tractor 16
Folding the machine for transport 16
Side drive shafts 17
Depth control. 17
Rigid or floating operation 18
Centre divider tine 18
Track eradicator tines 19
Weed cutter blades 19
Trailing shields 20
Operation
Checks before operation 21
Working instructions 21
Setting to produce the tilth 22
Operators check list 23
Servicing
Lubrication 24
Service intervals 25
Wear plates 26
Rotor blades 26
Spike removal / fitting 29
Options
Bedformer kit 30
Marker kit 30
Specifications 33

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INTRODUCTION
This handbook provides the information for the operation, adjustment, and
maintenance of your STANDEN POWAVATOR 400. To enable you to achieve the
best results from the machine, the manufacturer recommends that you read the
handbook thoroughly prior to using the machine for the first time.
Record the details of your machine below
Dealers name;……………………………………………………………………….
Address;……………………………………………………………………………..
………………………………………………………………………………………
Telephone number;………………………………………………………………….
Machine serial number;………………………………………………………………
Date Purchase;………………………………………………………………………
Date started work;……………………………………………………………………
This symbol indicates important safety messages within this handbook.
When you see this symbol, be alert to the possibility of injury to yourself
or others and / or damage to the machine, and carefully read the
message that follows
Throughout this handbook the terms ‘front’, ‘rear’, ‘left-hand’ (LH), and ‘right-hand’
(RH) are derived from the tractor driver’s position facing forwards in the normal
direction of travel.
Adjustments to the machine may have to be made singly or in combination according
to ground conditions. Always allow the machine to settle to a new setting before
making further adjustments.
WARRANTY
Should the machine suffer any faults or defects within the warranty period, please
contact your dealer. The warranty shall be effective only if the dealer is informed of
any such defect as soon as practicable upon discovery. Please note that some
components deemed as wearing parts are not covered for replacement under warranty.

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The Standen Powavator 400 series rotavator is designed for either primary, or
secondary cultivations, and will produce seedbeds, control weeds, incorporate
chemicals, trash and sterilizing agents. Fitted with the optional ridger units the
machine can be used to produce raised beds from ploughed land, or for cultivating,
and reforming existing beds ready for planting.
The Powavator is designed solely for cultivation operations. (INTENDED USE). Use
in any other way is considered as contrary to the intended use.
Standen Engineering Limited accepts no liability for damage, and or injury resulting
from this misuse, and these risks must be borne solely by the user. Compliance with,
and strict adherence to the conditions of operation, service, and repair as specified by
Standen Eng. Ltd also constitute essential elements for the intended use.
READ THIS MANUAL BEFORE ATTEMPTING TO OPERATE THE MACHINE.
Learn how to operate and service your Powavator correctly. Incorrect use could result
in personal injury, or damage to the machine and surroundings.
Operation, Servicing, and Repairs should only be carried out by persons trained and
familiar with the POWAVATOR 400, and acquainted with the relevant safety rules
(accident prevention). The accident prevention regulations, all generally recognized
regulations on safety, and occupational medicine and road traffic regulations must be
observed at all times.
Any modifications, other than correctly installed manufacturer supplied parts, will
relieve the manufacturer of all liability for any resulting damage or injury, and
invalidate the warranty.
REPLACEMENT PARTS
Recommended replacement parts are designed for your machine, and have the full
backing of the warranty. Only when recommended parts are used can responsibility
be considered under the terms of the warranty.
The spare parts section of this handbook contains a list of spare parts available from
your Standen dealer. The exploded illustrations show complete units or parts as
serviced.
Standen’s policy of continual product development means that components or even
complete assemblies are redesigned from time to time. Where possible the
modifications will be advised to your dealer. The page date, and issue number
indicate any revisions.
NOTE; Always quote the full machine serial number of your machine when
ordering spare parts

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SAFETY PRECAUTIONS
The Standen Powavator 400 has been designed to comply with current Safety
Regulations. However, as with all machinery there will be inherent dangers whilst
operating and carrying out maintenance on the machine. The following list of
precautions should be brought to the attention of all persons operating and working on
the machine. The list is not exhaustive. All machinery is potentially dangerous, and
great care must be exercised by the operators at all times. Standen Engineering
Limited will not accept liability for damage or injury caused by their products except
when such liability is specifically imposed by English statute.
SAFETY IS THE RESPONSIBILITY OF THE PERSON WORKING
WITH THE MACHINE, THINK ‘SAFETY’ AT ALL TIMES. READ
AND REMEMBER THE CONTENTS OF THIS HANDBOOK.
The machine must never be operated by untrained personnel or children.
Always check that the machine has been correctly mounted to the tractor before
setting off on operations.
Never set the machine in motion before ensuring that every one in the vicinity is
aware of your intentions.
The working area should be kept clear and free of obstructions at all times.
Never allow children or animals in the area when the machine is working
Stop if anyone enters the area.
Be alert for hidden obstructions. Should the machine hit an obstruction stop and
check for damage before proceeding. Make appropriate repairs before restarting
operation.
The operator must not leave the tractor seat with the machine running. Stop the
machine, lower the Powavator, and apply the parking brake before leaving the
machine.
Normal safe working procedures should be adopted at all times. Reduce speed when
transporting the machine on sloping ground. Do not work on ground where there is a
possibility of overturning, or across steep slopes.
Carry out repairs before starting operation. The machine must be properly
maintained, and in good working order. Never operate the machine in a state of
disrepair.
Always use mechanical or additional help when lifting heavy objects. Do not lift the
machine unassisted.
Do not operate the machine if you are under the influence drugs, alcohol, or you have
been advised by your Doctor that prescribed medication may impair your judgement.

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ROTATING BLADES ARE DANGEROUS!
Deep bed cultivation guards must not be used for general cultivation. Always fit the
correct front guards.
Keep hands and feet away from rotating parts. Rotating blades do not differentiate
between fingers, toes, and soils. Stop the machine when not working.
Stop the machine, and stop the tractor before attempting to clear any blockage.
Shut off the P.T.O. and raise the Powavator before reversing. Do not attempt to work
in reverse.
ALWAYS WEAR APPROPRIATE CLOTHING
Wear close fitting clothing and safety equipment. Wear substantial or proper safety
footwear.
Distraction is dangerous. Do not operate the machine wearing radio or personal
music headphones.
Loud noise can cause loss of hearing, or impaired hearing. Wear suitable ear
protection such as ear plugs, or ear defenders when operating the powavator.
In dry, dusty conditions, a closed cab, or a facemask may be required.
‘CHILDREN’
Do not let children near the machine when operating.
Children move very quickly, never assume they will remain where you last saw them.
Stay alert to their movements.
Keep children away from the working area; stop the machine if they enter the area.
Be extra vigilant when operating in areas of restricted vision. Shrubs, Trees, Objects
and blind corners can hide a child from your view.
Do not carry or let children ride on any attachment even when the machine is not
running.

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PRACTICE SAFE MAINTENANCE
Do not attempt to carry out repairs beyond your capability.
Understand service procedures before doing work. Keep work area clean and dry.
Never carry out any adjustment, service work or lubrication with the machine
running.
Keep guards in place when running the machine.
Before carrying out any work on the machine, lower the machine to the ground,
switch of the tractor engine, apply the parking brake, remove the ignition key, and
disconnect the PTO shaft.
Never work under the machine when it is raised on the tractor hydraulics. Always
lower the machine onto solid supports to prevent the machine dropping suddenly.
Wear gloves when handling sharp blades.
Take care that the blades cannot rotate onto you when working in their vicinity.
Regularly lubricate the machine as per the service schedule in the operator’s
handbook. Check all nuts and bolts for tightness especially those securing the blades.

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PICTORIAL SAFETY SIGNS
Safety decals are affixed to the Powavator to signify, and remind the operator of,
potential dangers. The following signs are fitted to highlight the dangers as shown
below.
Rotating parts, indicating the danger of
severing, and reminder to stop for
maintenance
Reminder to refer to operator’s
handbook before carrying out
maintenance, and to stop the machine.
General safety reminder to keep guards in
place, and to keep children clear of the
machine.
Thrown objects warning, and keep your
distance warning
Safety reminder to use the correct front
guards for the type of cultivation being
carried out.

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DESCRIPTION
The Standen Powavator 400 series rotavator is suitable for category 2 or 3 linkage
rear mounting. The centre linkage unit is fitted with a heavy-duty gearbox.
Carried on the centre section are a pair of hydraulically folded wing mounted
Powavator units which are shaft driven from the central gearbox, and protected by
preset ‘rattle’ clutches in the drive shafts.
The heavy-duty rotor gear drives are oil bath lubricated for maximum continuous
power transmission.
Depending on build specification, the machine can be fitted with rear mounted ridger
units, steel or rubber side depth wheels, or a rear mounted packer roller. Wheel or
centre line markers are available for bed forming work on ploughed land. Soil
opening disc assemblies can be fitted to run in front of the outer gear cases.
TRACTOR SUITABILITY
The Standen Powavator 400 is designed to be mounted on the three point linkage,
either category ‘2’ or ‘3’, of tractors of a minimum power of 225HP (168kW).
The tractor must be capable of handling, and lifting the implement safely, and may
need to be ballasted accordingly.
The wheel equipment must also be capable of carrying the combined weight of tractor
and implement,
Tyre pressures should be checked to the manufacturers recommendation, and both
side tyres should be identical type, and in approximately the same state of wear.

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ATTACHING THE POWAVATOR TO THE TRACTOR
BEFORE ATTACHING THE POWAVATOR, APPLY THE TRACTOR
HANDBRAKE, AND SWITCH OFF THE ENGINE.
Position the tractor lift arms so that the mounting pins can be inserted through the
lower hitch arms, and the tractor link ball ends. Fit the mounting pins, and secure
using the clip pins. Adjust the top link length, and fit to the machine top hitch arm
using the mounting pin supplied. Secure using the clip pin. To keep the PTO shaft
working angle as shallow as possible the top and bottom hitch arms may have to be
adjusted in or out. To do this remove the locking bolts and spacers and slide the hitch
arms to the new position and re-secure.
Adjust linkage stabilisers to suit the operation, up to a maximum of 50mm (2”)
sideways movement.
Fit the PTO drive shaft to the tractor PTO, ensuring that the yoke quick release
mechanism locates fully in the tractor PTO groove. Anchor the guard safety check
chain to the tractor master shield. Ensure that the chain does not wrap around the
plastic guard, as this can cause premature failure of the guard.
If fitting the PTO shaft to a tractor for the first time, check that the open, and closed
length of the shaft is correct for the tractor / machine combination in the raised, and
lowered positions. A minimum 1/3
rd
overlap must be maintained when extended.
NEVER RUN THE MACHINE WHEN IN THE RAISED
POSITION.
Lift the machine and remove the transport stands. Refit the stands in the inverted
position for storage.

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OPENING THE MACHINE FOR WORK
DO NOT ATTEMPT TO FOLD THE MACHINE UNLESS IT IS
COUPLED TO THE TRACTOR LINKAGE.
ENSURE THAT YOU ARE CLEAR OF POWER LINES, OR
ANY OVERHEAD OBSTRUCTIONS.
STOP THE TRACTOR. APPLY THE PARKING BRAKE. ENSURE
THE PTO IS FREE TO ROTATE, OR IS DISCONNECTED FROM THE
TRACTOR
With the machine parked on level ground.
Stop the tractor, and apply the handbrake.
Open the hydraulic ram shut off valve. (handle in line with pipes).
Operate the hydraulic service to raise the wings fully and then manually release the
transport latches by pulling on the latch cord.
Raise the machine at least 300mm to allow ground clearance when the wings rotate.
Operate the hydraulic service to open the wings, (they may not move together).

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REMOVING THE POWAVATOR FROM THE TRACTOR
APPLY THE TRACTOR HANDBRAKE AND SWITCH OFF THE
ENGINE. IF STORING FOLDED THE MACHINE MUST BE ON
SOLID GROUND.
Lift the machine, and fit the transport stands.
Disconnect the PTO drive shaft from the tractor PTO. Support the PTO on the rest as
shown.
Disconnect the top link, and lower links
FOLDING THE MACHINE FOR TRANSPORT
DO NOT ATTEMPT TO FOLD THE MACHINE UNLESS IT IS
COUPLED TO THE TRACTOR LINKAGE. ENSURE THAT
YOU ARE CLEAR OF POWER LINES, OR ANY OVERHEAD
OBSTRUCTIONS. STOP THE TRACTOR. APPLY THE
PARKING BRAKE. ENSURE THE PTO IS FREE TO ROTATE,
OR IS DISCONNECTED FROM THE TRACTOR
With the machine parked on level ground, stop the tractor and apply the handbrake.
Open the hydraulic ram shut off valve. (handle in line with pipes)
Raise the machine at least 300mm to allow ground clearance when the wings rotate.
Operate the hydraulic service to fold the wings, (they may not move together).
Ensure the transport latches locate correctly to lock the wings into the vertical
transport position.
Close the hydraulic ram shut off valve. (handle at 90° to pipes)

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SIDE DRIVE SHAFTS
NEVER REMOVE THE PTO COVERS WITH THE MACHINE
RUNNING. KEEP ALL GUARDS IN PLACE.
The LH and RH drive shafts are each fitted with a torque limiting ‘rattle’ clutch at the
outboard end. The clutch is preset and has no user adjustment. If the clutch repeatedly
trips then it may be necessary to revise the method of working, i.e. shallower first
pass, or slower forward speed to prevent overloading the machine.
IF FOR ANY REASON THE LH OR RH DRIVE SHAFTS ARE
DISCONNECTED FROM THE CENTRAL GEARBOX THEY
MUST BE REFITTED WITH THE LH AND RH DRIVE SHAFT
YOKES EXACTLY IN LINE. THIS IS NECESSARY TO ALLOW
THE SHAFT JOINTS TO FOLD. FAILURE TO DO THIS WILL
RESULT IN BREAKAGE OF THE YOKES AND/OR GEARBOX
OUTPUT SHAFTS.
DEPTH CONTROL
The depth of cultivation is controlled down to a maximum of 200mm (8”) by means
of side mounted steel or rubber wheels, by full width rear roller, or when ridgers are
fitted by the set of the ridgers, and the tractor position control.
When using side wheels the depth is adjusted by means of the screw adjuster mounted
on each wheel arm.
To adjust the depth;
Release the locking clip, and rotate the handle clockwise to increase depth, and anti
clockwise to decrease depth.
When correct depth is reached, fold down the handles and secure the locking clip.

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Ensure that the adjustment is made equally both sides.
When using ridgers the depth of the centre ridgers is preset by means of the adjuster
screw in the parallel linkage. This gives the basic depth. The outer ridgers are fitted
with hydraulic rams, and these allow the outer ridgers to be raised and lowered
alternately to balance the side force on the tractor when working in pre formed ridges.
The units can then be locked down to preset positions by means of shut off valves if
required.
RIGID OR FLOATING OPERATION.
The Powavator 400 can be operated either with the wings locked rigid, or with the
wings allowed to float to follow the ground surface. When working to produce ridges
the wings should be locked horizontal by closing the ram shut-off valve. For general
rotavation and incorporation the wings should be allowed to float. This is achieved by
leaving the ram shut off valve in the open position and the tractor service in float. The
wings are then able to move upwards if too much pressure is placed on the powavator.
CENTRE DIVIDER TINE
A centre divider tine is bolted to the centre frame section. Working in conjunction
with the side deflector plates mounted on the powavator side plates, this splits the soil
to allow it to flow through the rotors and not between the inner side plates.
The tine mounting is adjustable for depth, and should be set level with the bottom of
the rotor blades. The point, and shin pieces are replaceable, and should be changed as
necessary to prevent damage to the mounting.
Operating with the tine removed will result in premature wear and damage to the
powavator side plate, and to soil in the centre not being properly cultivated.

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TRACK ERADICATOR TINES
The track eradicator tine kit is designed to break up the compacted soil created under
the tractor wheels. Two pairs of tines mounted to the powavator centre frame are
positioned directly behind the tractor rear wheels. Adjustment is provided for different
track widths and tine point depth is set using the locking pins.
WEED CUTTER BLADES
NEVER ATTEMPT TO ADJUST THE WEED CUTTER BLADES
WITH THE MACHINE RUNNING.
STOP THE ENGINE, APPLY THE HAND BRAKE, AND
SUPPORT THE MACHINE SAFELY BEFORE WORKING
UNDER IT.
Weed cutter blades are fitted to both end flanges of the rotors to help prevent trash
from wrapping around the bearing housing, and causing premature failure.
To adjust blade positions:
Slacken the two adjusting bolts (A), and slide the Cutter blade (B) until it just touches
the shearing blade on the rotor end flange, and slightly separate.
Tighten the two adjusting bolts.
Rotate the rotor by hand and check that the blade adjustment is correct.
Run the powavator, and listen to ensure that the blades do not catch when under
power.

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TRAILING SHIELDS
The trailing shields are used to help control the type of tilth produced. With the
shields lowered, the cultivated soil strikes them and clods are broken on impact
producing a finer tilth. Trash is held and buried, and the shield levels and
consolidates the top of the seedbed.
With the shields raised, the soil is thrown out unrestricted producing a coarse tilth.
Trash and weeds are left on the surface to weather.
The trailing shields are spring loaded, with the spring rods controlled by an adjustable
arm. By relocating the pins the arms can be adjusted.
CAUTION ASSISTANCE MAY BE REQUIRED TO LIFT THE
TRAILING SHIELDS
To adjust the shields:
Remove the ‘R’ clips (A) from the pins.
Take the weight of the trailing shields and remove the securing pins.
Reposition the trailing board as required.
Replace the securing pins and ‘R’ clips.
READ THE SAFETY INSTRUCTIONS BEFORE USING THE
MACHINE.
DO NOT ATTEMPT ANY ADJUSTMENTS WITH THE MACHINE
RUNNING.